/* ----- General ----- */

@font-face {
  font-family: 'levenim-MT';
  src: url('levenim-MT.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: 'lato';
  src: url('lato.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

@keyframes slide {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(700%);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translate(1px, 1px) rotate(0deg);
  }

  10%,
  50%,
  90% {
    transform: translate(-1px, -2px) rotate(-1deg);
  }

  20%,
  60% {
    transform: translate(-3px, 0px) rotate(1deg);
  }

  30%,
  70% {
    transform: translate(3px, 2px) rotate(0deg);
  }

  40%,
  80% {
    transform: translate(1px, -1px) rotate(1deg);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
}

body {
  font-family: 'levenim-MT', fallback_font_family, sans-serif;
  background-color: #f1f5f9;
  scroll-behavior: smooth;
  color: #252525;
}

a {
  color: #0b89a8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  font-family: 'lato', sans-serif;
  font-weight: 100;
}

h1 {
  font-size: 3.5rem;
  font-weight: 300;
}

h2 {
  font-size: 3rem;
  font-weight: 300;
}

h3 {
  font-size: 2.5rem;
  font-weight: 300;
}

h4 {
  font-size: 2rem;
  font-weight: 300;
}

h5 {
  font-size: 1.75rem;
  font-weight: 300;
}

h6 {
  font-size: 1.5rem;
  font-weight: 300;
}

p {
  font-size: 20px;
}

/* ----- Header ----- */

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  background-color: rgb(210, 225, 225);
  user-select: none;
  outline: none;
  z-index: 1;
}

header img {
  height: 75px;
  margin: -5px 20px -15px 20px;
}

header a {
  color: inherit;
  margin: 0 10px;
}

.alt-header {
  background-color: transparent;
  color: rgb(210, 225, 225);
  transition: 0.5s ease;
}

.new-alt-header {
  background-color: rgb(210, 225, 225);
  color: #252525;
}

.hamburger-menu {
  display: none;
  cursor: pointer;
  margin-right: 20px;
}

.bar {
  width: 25px;
  height: 3px;
  background-color: #333;
  margin: 6px 0;
}

.visible {
  display: flex !important;
  flex-direction: column;
  row-gap: 20px;
}

/* ----- Footer ----- */

footer {
  position: relative;
  bottom: 0;
  width: 100%;
  display: grid;
  place-content: center;
  background-color: rgb(210, 225, 225);
  grid-template-columns: 5% 65% 10% 10%;
  grid-template-rows: 4rem 4rem 4rem 4rem 2.5rem;
  padding-top: 2.5rem;
  user-select: none;
  outline: none;
}

footer img {
  height: 100px;
  margin: -10px 25px;
}

footer a {
  color: inherit;
}

#g1 {
  grid-area: 1 / 1 / 1 / 1;
}

#g2 {
  grid-area: 1 / 3 / 1 / 3;
}

#g3 {
  grid-area: 2 / 3 / 2 / 3;
}

#g4 {
  grid-area: 3 / 3 / 3 / 3;
}

#g5 {
  grid-area: 4 / 3 / 4 / 3;
}

#g6 {
  grid-area: 1 / 4 / 1 / 4;
}

#g7 {
  grid-area: 2 / 4 / 2 / 4;
}

#g8 {
  grid-area: 3 / 4 / 3 / 4;
}

#g9 {
  grid-area: 5 / 1 / 5 / 4;
}

footer p {
  font-size: 0.65rem;
  text-align: center;
  padding: 10px 0 0 200px;
}

/* ----- Home Page ----- */

#stylish {
  width: 100vw;
  min-height: 35vh;
  filter: brightness(0.85);
  overflow: hidden;
}

.text-container {
  position: absolute;
  top: 17.5vw;
  left: 50vw;
  display: flex;
  text-align: center;
  user-select: none;
  outline: none;
  flex-wrap: wrap;
  max-width: 32.5vw;
  transform: translate(-50%, -50%);
  color: rgb(210, 225, 225);
}

.cursor {
  margin-left: 5px;
  animation: blink 0.75s infinite;
}

.introductory {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-top: 35px;
  margin-bottom: 75px;
  font-size: 20px;
}

.introductory * {
  margin: 30px;
  text-align: center;
}

.alt-text {
  background-color: #02596e;
  color: #f9f9f9;
  transform: skew(-10deg);
  display: inline-block;
  margin-left: 10px;
  padding: 5px 10px;
  box-shadow: 0 0 2px rgb(30, 30, 30);
}

#slider {
  height: 17.5rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('./assets/background.svg');
  background-color: #02596e;
  filter: brightness(0.8125);
  border: 5px solid rgb(10, 10, 10);
  background-size: cover;
  background-position: center;
  overflow: hidden;
  user-select: none;
  outline: none;
}

img[alt='Grunge'] {
  position: absolute;
  object-fit: cover;
  object-position: center;
  opacity: 0.175;
  z-index: 1;
}

img[alt='Thumbnail'] {
  border: 1px solid rgb(30, 30, 30);
  box-shadow: 0 0 5px rgb(10, 10, 10);
  animation: slide 80s infinite linear;
  border-radius: 10px;
  margin: 20px;
}

section {
  opacity: 0;
  transform: translateY(50px);
  transition:
    opacity 2s ease,
    transform 1s ease;
}

section.activated {
  opacity: 1;
  transform: translateY(0);
}

.welcome {
  display: grid;
  margin: 10rem 15rem;
  grid-template-columns: 50% 50%;
  gap: 2.5rem;
}

.welcome img {
  display: flex;
  justify-self: center;
  align-self: center;
  height: 30rem;
  border-radius: 20px;
  border: 2px solid #02596e;
  grid-area: 1 / 1 / 1 / 1;
}

.welcome img:hover {
  scale: 1.005;
  animation: shake 4s infinite;
}

.welcome div {
  display: flex;
  justify-content: center;
  align-items: start;
  flex-direction: column;
  row-gap: 3rem;
  grid-area: 1 / 2 / 1 / 2;
}

.welcome h1 {
  font-size: 35px;
}

/* ----- Dashboard Page ----- */

#video-list {
  display: flex;
  flex-direction: column;
  padding: 7.5rem 10rem;
  gap: 3rem;
}

#selecters {
  display: flex;
  justify-content: space-evenly;
  font-size: 1.25rem;
}

label {
  margin-right: 1rem;
}

select {
  padding: 8px 13px;
  font-size: 1.175rem;
  color: rgb(30, 30, 30);
  background-color: #f1f5f9;
  border: #303030 solid 1px;
  border-radius: 5px;
}

#all-videos {
  display: flex;
  justify-content: center;
  row-gap: 2rem;
  column-gap: 1.5rem;
  flex-wrap: wrap;
}

.video {
  display: grid;
  grid-template-rows: 210px auto;
  grid-template-columns: 60px 290px;
  font-family: 'lato', sans-serif;
  transition: 0.5s ease;
  padding-bottom: 30px;
  border-radius: 10px;
}

.video:hover {
  background-color: rgb(215, 230, 230);
  transition: 0.5s ease;
  text-decoration: none;
}

.youtube-thumbnail {
  display: flex;
  align-self: center;
  justify-self: center;
  width: 300px;
  border-radius: 5px;
  grid-area: 1 / 1 / 1 / 3;
}

.video-duration {
  position: absolute;
  margin-top: 9.5rem;
  margin-left: 16rem;
  font-size: 14px;
  grid-area: 1 / 1 / 1 / 3;
  background-color: rgba(0, 0, 0, 0.75);
  color: rgb(210, 225, 225);
  border-radius: 3px;
  padding: 3px;
}

.youtube-channel {
  display: flex;
  justify-self: center;
  border-radius: 50%;
  width: 40px;
  grid-area: 2 / 1 / 2 / 1;
}

.youtube-info {
  min-width: 250px;
  color: #252525 !important;
  grid-area: 2 / 2 / 2 / 3;
}

.youtube-info * {
  padding: 5px 0;
}

/* ----- Api Page ----- */

#partition {
  position: fixed;
  display: flex;
  flex-direction: column;
  margin: 10rem 15% 0 7.5%;
  color: #303030;
  gap: 1rem;
}

#api {
  display: flex;
  flex-direction: column;
  padding: 7.5rem 10rem 7.5rem 30rem;
  gap: 2rem;
}

ul {
  margin-left: 3rem;
}

ul * {
  padding: 5px 0;
}

.code {
  padding: 10px 30px 25px 45px;
  max-width: 80%;
  border: 1px solid #abb2bf;
  border-radius: 20px;
  color: #abb2bf;
  background-color: #282c33;
  font-family: 'Droid Sans Mono', monospace;
  text-align: left;
  font-size: 0.9rem;
}

.small-screen-message {
  display: none;
}

#buttons {
  display: flex;
  margin: 0 0 -30px 30px;
  gap: 3px;
}

.programming-language {
  background-color: #282c33;
  color: #c9ced6;
  border: none;
  border-radius: 5px;
  font-size: 1.375rem;
  padding: 13px;
}

.programming-language:hover {
  cursor: pointer;
}

.api-call-example {
  display: none;
}

.selected {
  background-color: #c9ced6;
  color: #282c33;
}

.comment {
  color: #797a7c;
}

.keyword {
  color: #c778dd;
}

.function {
  color: #62aeef;
}

.operator {
  color: #55b6c2;
}

.var {
  color: #e06b74;
}

.str {
  color: #98c179;
}

.int,
.class,
.import {
  color: #e5c07a;
}

.bool,
.const {
  color: #d19a66;
}

/* ----- Newsletter Page ----- */

.decoration {
  position: absolute;
  filter: invert(20%);
  top: 37.5vh;
  height: 175px;
  z-index: -1;
}

.right {
  right: 7.5rem;
  rotate: -15deg;
}

.left {
  left: 7.5rem;
  rotate: 15deg;
}

.communication {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex-direction: column;
  padding: 8.5rem 22.5rem;
  scale: 0.95;
  gap: 4rem;
}

.subscribe {
  background-color: #0b89a8;
  color: rgb(230, 250, 250);
  border-radius: 30px 10px 20px 5px;
  box-shadow: 5px 5px 0 rgba(30, 30, 30, 0.9);
  transition: 0.5s ease;
  border: none;
  font-size: 2rem;
  padding: 20px;
}

.subscribe:hover {
  cursor: pointer;
  background-color: #107090;
  transition: 0.5s ease;
}

.popup {
  display: none;
  position: fixed;
  z-index: 2;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
}

.popup-content {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transform: translate(-50%, -50%);
  background-color: #f9f9f9;
  padding: 1rem;
  border-radius: 3rem;
}

.popup-content img {
  width: 35%;
  display: flex;
  align-self: center;
  margin-bottom: -20px;
}

input[name='email'] {
  min-width: 1.5rem;
}

.primary-btn {
  color: #f9f9f9;
  background-color: #0b89a8;
  border: #0b89a8 1px solid !important;
  border-radius: 5px;
  transition: 0.5s ease;
  font-size: 1.5rem;
  padding: 10px 15px;
  border: none;
}

.primary-btn:hover {
  cursor: pointer;
  color: #0b89a8;
  border: #0b89a8 1px solid;
  background-color: #f9f9f9;
  transition: 0.5s ease;
}

#cancel {
  color: #0b89a8;
  background-color: #f9f9f9;
  border: #0b89a8 1px solid;
  border-radius: 5px;
  transition: 0.5s ease;
  font-size: 1.5rem;
  padding: 10px 15px;
  margin-left: 1rem;
}

#cancel:hover {
  cursor: pointer;
  color: #f9f9f9;
  background-color: #0b89a8;
  transition: 0.5s ease;
}

.news-btn {
  display: flex;
  align-items: normal;
  justify-content: space-around;
}

.popup-content label {
  font-size: 1.4rem;
}

.popup-content select {
  scale: 1;
  background-color: #f9f9f9;
}

/* ----- Contact Page ----- */

.contact {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex-direction: column;
  padding: 6rem 20rem;
  scale: 0.95;
  gap: 3rem;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  row-gap: 3rem;
  margin: 3rem 5rem;
}

.form-group {
  display: flex;
  align-items: flex-start;
  width: fit-content;
  column-gap: 4rem;
}

.form-group div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
  width: 20rem;
}

.form-group label {
  font-size: 1.35rem;
  font-weight: bold;
}

.form-group small {
  font-size: 0.85rem;
}

input,
textarea {
  font-family: 'lato', sans-serif;
  color: #303030;
  font-size: 20px;
  min-width: 55rem;
  background-color: #f1f5f9;
  border: 1px solid #a3a5a8;
  border-radius: 10px;
}

input {
  min-height: 3rem;
  padding: 0 5px;
}

textarea {
  padding: 5px;
  min-height: 20rem;
  resize: none;
}

.submit-btn {
  width: 75%;
  padding: 10px;
  margin-top: 50px;
  transition: 0.5s ease;
  font-size: 1.25rem;
  background-color: #0b89a8;
  color: rgb(230, 250, 250);
  border: #0b89a8 1px solid !important;
  border-radius: 5px;
}

.submit-btn:hover {
  background-color: #f1f5f9;
  border: #0b89a8 1px solid;
  color: #0b89a8;
  cursor: pointer;
  transition: 0.5s ease;
}

/* ----- Behind the Scene Page ----- */

#behind-the-scene {
  display: flex;
  align-items: center;
  justify-content: left;
  text-align: left;
  flex-direction: column;
  padding: 7.5rem 17.5%;
  gap: 5rem;
}

#behind-the-scene h4 {
  margin: -1.5rem;
}

#behind-the-scene p {
  margin: -1.25rem;
}

.python-img {
  width: 50%;
  border: 4px solid #252525;
  border-radius: 15px;
}

.math {
  font-weight: 1000;
  font-size: 140%
}

/* ----- About Me & Privacy Policy Page ----- */

.plain-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 7.5rem 25rem;
  gap: 25px;
}

#based {
  width: 85%;
  display: flex;
  align-self: center;
  border: 3px solid #0b89a8;
  border-radius: 15px;
  margin-bottom: 15px;
}

/* ----- 404 Error Page ----- */

#error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10rem 37.5rem 5rem 37.5rem;
  row-gap: 2rem;
}

#error-page img {
  width: 60%;
  user-select: none;
}

#error-page button {
  margin-top: 1.5rem;
  font-size: 30px;
  padding: 20px 30px;
}

/* ----- Media Queries ----- */

/* Extra small devices */
@media only screen and (min-width: 1px) and (max-width: 549px) {
  .nav-links {
    display: none;
    top: 50px;
    right: 20px;
    position: absolute;
    max-width: fit-content;
    color: #252525;
    background-color: rgb(210, 225, 225);
    padding: 20px 10px;
    border: 1px solid #252525;
    border-radius: 5px;
    box-shadow: 0 0 5px rgb(10, 10, 10);
    z-index: 2;
  }

  .hamburger-menu {
    display: block;
  }

  footer {
    grid-template-columns: 20% 0% 40% 40%;
    grid-template-rows: 3rem 3rem 3rem 5rem 6rem;
  }

  footer img {
    display: none;
  }

  footer p {
    font-size: 9px;
    grid-area: 5 / 2 / 5 / 4 !important;
    padding: 0 0 0 4rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  h3 {
    font-size: 1.3rem;
  }

  h4 {
    font-size: 1.2rem;
  }

  h5 {
    font-size: 1.1rem;
  }

  h6 {
    font-size: 1rem;
  }

  p {
    font-size: 15px;
  }

  #stylish {
    min-height: 20vh;
  }

  .text-container {
    top: 20vw;
  }

  .text-container h2 {
    font-size: 1.15rem;
  }

  .introductory * {
    margin: 20px;
  }

  .welcome {
    margin: 5rem 2rem;
    gap: 1rem;
  }

  .welcome img {
    height: 10rem;
    border-radius: 10px;
    border: 1px solid #02596e;
  }

  .welcome div {
    row-gap: 1rem;
  }

  .welcome h1 {
    font-size: 25px;
  }

  #partition,
  .code,
  .math,
  .decoration {
    display: none;
  }

  #api {
    padding: 6.5rem 3rem;
    gap: 1rem;
  }

  .small-screen-message {
    display: block;
    font-size: 1rem;
    padding: 20px;
    border: 1px solid #abb2bf;
    border-radius: 15px;
    color: #abb2bf;
    background-color: #282c33;
    font-family: 'Droid Sans Mono', monospace;
    text-align: center;
  }

  #buttons {
    margin: 0 0 -10px 5px;
    gap: 3px;
  }

  .programming-language {
    font-size: 1.25rem;
    padding: 10px;
  }

  #video-list {
    padding: 6.5rem 3rem;
    gap: 0.5rem;
  }

  #selecters {
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
  }

  select {
    padding: 3px;
    font-size: 0.85rem;
  }

  #all-videos {
    margin-top: 20px;
    row-gap: 1rem;
  }

  .communication {
    padding: 6.5rem 3rem;
    scale: 1;
    gap: 2.5rem;
  }

  .subscribe {
    font-size: 1.5rem;
    padding: 15px;
  }

  .popup-content {
    padding: 0;
    border-radius: 2rem;
  }

  .popup-content > form {
    row-gap: 0.5rem;
  }

  .popup-content > form > div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .popup-content img {
    width: 25%;
    margin-top: 20px;
    margin-bottom: -20px;
  }

  .primary-btn {
    font-size: 1.25rem;
    padding: 8px 12px;
  }

  #cancel {
    font-size: 1.25rem;
    padding: 8px 12px;
    margin-left: 0rem;
    margin-top: -5px;
  }

  .popup-content label {
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
  }

  .news-btn > * {
    margin: 1rem;
  }

  .plain-text {
    padding: 6.5rem 3rem;
    gap: 20px;
  }

  #behind-the-scene {
    padding: 6.5rem 3rem;
    gap: 3rem;
  }

  #behind-the-scene h4 {
    margin: -0.5rem;
  }

  #behind-the-scene p {
    margin: -0.25rem;
  }

  .python-img {
    width: 75%;
    border: 2px solid #252525;
    border-radius: 10px;
  }

  .contact {
    padding: 5rem 3rem;
    gap: 2rem;
  }

  form {
    row-gap: 3rem;
    margin: 3rem 5rem;
  }

  .form-group {
    flex-direction: column;
    column-gap: 4rem;
  }

  .form-group div {
    width: 20rem;
  }

  .form-group label {
    font-size: 1.35rem;
    font-weight: bold;
  }

  input,
  textarea {
    font-size: 15px;
    min-width: 25rem;
  }

  .submit-btn {
    width: 25%;
    margin-top: 10px;
  }

  #error-page {
    padding: 7.5rem 5rem 5rem 5rem;
  }

  #error-page img {
    width: 75%;
  }

  #error-page button {
    margin-top: 0rem;
    font-size: 20px;
    padding: 10px 15px;
  }
}

/* Small devices */
@media only screen and (min-width: 550px) and (max-width: 767px) {
  .nav-links {
    display: none;
    top: 50px;
    right: 20px;
    position: absolute;
    max-width: fit-content;
    color: #252525;
    background-color: rgb(210, 225, 225);
    padding: 20px 10px;
    border: 1px solid #252525;
    border-radius: 5px;
    box-shadow: 0 0 5px rgb(10, 10, 10);
    z-index: 2;
  }

  .hamburger-menu {
    display: block;
  }

  footer {
    grid-template-columns: 10% 35% 20% 25%;
    grid-template-rows: 4rem 4rem 4rem 5rem 3rem;
  }

  footer p {
    padding: 0 0 0 7.5rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  h3 {
    font-size: 1.45rem;
  }

  h4 {
    font-size: 1.3rem;
  }

  h5 {
    font-size: 1.15rem;
  }

  h6 {
    font-size: 1.05rem;
  }

  p {
    font-size: 17px;
  }

  #stylish {
    min-height: 25vh;
  }

  .text-container {
    top: 19vw;
  }

  .introductory * {
    margin: 25px;
  }

  .welcome {
    margin: 5rem 3rem;
    gap: 1.25rem;
  }

  .welcome img {
    height: 14rem;
    border-radius: 10px;
  }

  .welcome div {
    row-gap: 2rem;
  }

  .welcome h1 {
    font-size: 28px;
  }

  #partition,
  .code,
  .math,
  .decoration {
    display: none;
  }

  #api {
    padding: 6.5rem 4rem;
    gap: 1rem;
  }

  .small-screen-message {
    display: block;
    font-size: 1rem;
    padding: 20px;
    border: 1px solid #abb2bf;
    border-radius: 15px;
    color: #abb2bf;
    background-color: #282c33;
    font-family: 'Droid Sans Mono', monospace;
    text-align: center;
  }

  #buttons {
    margin: 0 0 -10px 5px;
    gap: 3px;
  }

  .programming-language {
    font-size: 1.25rem;
    padding: 10px;
  }

  #video-list {
    padding: 6.5rem 2rem;
    gap: 0.5rem;
  }

  #selecters {
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
  }

  select {
    padding: 10px;
    font-size: 1rem;
  }

  #all-videos {
    margin: 0 -30px;
    row-gap: 1rem;
    column-gap: 0.25rem;
  }

  .video {
    grid-template-rows: 170px 140px;
    grid-template-columns: 40px 270px;
    border-radius: 10px;
  }

  .youtube-thumbnail {
    width: 240px;
  }

  .video-duration {
    margin-top: 7.5rem;
    margin-left: 13rem;
  }

  .youtube-channel {
    width: 30px;
  }

  .youtube-info {
    min-width: 225px;
  }

  .communication {
    padding: 6.5rem 4rem;
    scale: 1;
    gap: 3rem;
  }

  .subscribe {
    font-size: 1.5rem;
    padding: 15px;
  }

  .popup-content {
    padding: 0;
    border-radius: 2rem;
  }

  .popup-content > form {
    row-gap: 1rem;
  }

  .popup-content > form > div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .popup-content img {
    width: 30%;
    margin-top: 20px;
    margin-bottom: -20px;
  }

  .primary-btn {
    font-size: 1.25rem;
    padding: 8px 12px;
  }

  #cancel {
    font-size: 1.25rem;
    padding: 8px 12px;
    margin-left: 0rem;
    margin-top: -5px;
  }

  .popup-content label {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
  }

  .news-btn > * {
    margin: 1rem;
  }

  .plain-text {
    padding: 6.5rem 4rem;
    gap: 20px;
  }

  #behind-the-scene {
    padding: 6.5rem 4rem;
    gap: 3rem;
  }

  #behind-the-scene h4 {
    margin: -0.5rem;
  }

  #behind-the-scene p {
    margin: -0.25rem;
  }

  .python-img {
    width: 90%;
  }

  .contact {
    padding: 5rem 3rem;
    gap: 2rem;
  }

  form {
    row-gap: 3rem;
    margin: 3rem 5rem;
  }

  .form-group {
    flex-direction: column;
    column-gap: 4rem;
  }

  .form-group div {
    width: 20rem;
  }

  input,
  textarea {
    font-size: 15px;
    min-width: 35rem;
  }

  #error-page {
    padding: 7.5rem 7.5rem 5rem 7.5rem;
  }

  #error-page img {
    width: 75%;
  }

  #error-page button {
    margin-top: 0.5rem;
    font-size: 22px;
    padding: 12px 17px;
  }
}

/* Medium devices  */
@media only screen and (min-width: 768px) and (max-width: 1099px) {
  footer {
    grid-template-columns: 5% 50% 15% 20%;
    grid-template-rows: 4rem 4rem 4rem 4rem 2.5rem;
  }

  footer p {
    padding: 0 0 0 7.5rem;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 2rem;
  }

  h4 {
    font-size: 1.75rem;
  }

  h5 {
    font-size: 1.5rem;
  }

  h6 {
    font-size: 1.25rem;
  }

  p {
    font-size: 1rem;
  }

  .text-container {
    max-width: 40vw;
    top: 19vw;
  }

  .text-container h2 {
    font-size: 1.75rem;
  }

  .welcome {
    margin: 5rem 4rem;
  }

  .welcome img {
    height: 18rem;
    border-radius: 10px;
  }

  .welcome h1 {
    font-size: 30px;
  }

  #partition {
    display: none;
  }

  #api {
    padding: 7.5rem 5rem;
    gap: 1rem;
  }

  #buttons {
    margin: 0 0 -15px 30px;
    gap: 3px;
  }

  .code {
    padding: 10px 20px 25px 20px;
    max-width: 110%;
    font-size: 0.85em;
  }

  .math {
    scale: 0.85;
  }

  #video-list {
    padding: 6.5rem 3rem;
    gap: 0.5rem;
  }

  #all-videos {
    margin: 0 -30px;
    row-gap: 3rem;
    column-gap: 1rem;
  }

  .communication {
    padding: 7.5rem 5rem;
    scale: 1;
  }

  .decoration {
    height: 125px;
    top: 40%;
  }

  .left {
    left: 5rem;
  }

  .right {
    right: 5rem;
  }

  .popup-content > form {
    row-gap: 1rem;
  }

  .popup-content > form > div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .popup-content img {
    width: 40%;
    margin-top: 20px;
    margin-bottom: -20px;
  }

  #cancel {
    margin-left: -1rem;
  }

  .popup-content label {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }

  .news-btn {
    display: block !important;
  }

  .plain-text {
    padding: 7.5rem;
    gap: 20px;
  }

  #behind-the-scene {
    padding: 7.5rem 5rem;
    gap: 3rem;
  }

  .contact {
    padding: 5rem;
    gap: 2.5rem;
  }

  .form-group {
    flex-direction: column;
    column-gap: 4rem;
  }

  input,
  textarea {
    min-width: 45rem;
  }

  #error-page {
    padding: 7.5rem 15rem 5rem 15rem;
  }

  #error-page img {
    width: 75%;
  }

  #error-page button {
    margin-top: 1rem;
    font-size: 25px;
    padding: 15px 20px;
  }
}

/* Large devices */
@media only screen and (min-width: 1100px) and (max-width: 1374px) {
  footer {
    grid-template-columns: 5% 50% 15% 20%;
  }

  footer p {
    padding: 0 0 0 10rem;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.675rem;
  }

  h3 {
    font-size: 2.3rem;
  }

  h4 {
    font-size: 1.925rem;
  }

  h5 {
    font-size: 1.575rem;
  }

  h6 {
    font-size: 1.3rem;
  }

  p {
    font-size: 1.125rem;
  }

  .welcome {
    margin: 5rem 7.5rem;
  }

  .welcome img {
    height: 25rem;
  }

  .welcome h1 {
    font-size: 35px;
  }

  #partition {
    display: none;
  }

  #api {
    padding: 7.5rem 10rem;
  }

  #buttons {
    margin: 0 0 -50px 90px;
    gap: 3px;
  }

  .code {
    padding: 15px 25px 30px 25px;
    max-width: 120%;
    font-size: 1rem;
    scale: 0.9;
  }

  #video-list {
    padding: 6.5rem 3rem;
    gap: 0.5rem;
  }

  #all-videos {
    margin: 0 -30px;
    row-gap: 3rem;
    column-gap: 0.75rem;
  }

  .communication {
    padding: 7.5rem 7.5rem;
    scale: 1;
  }

  .decoration {
    height: 125px;
    top: 40%;
  }

  .popup-content > form > div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .popup-content > form {
    row-gap: 1rem;
  }

  .popup-content img {
    width: 40%;
    margin-top: 20px;
    margin-bottom: -20px;
  }

  .popup-content label {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
  }

  .news-btn {
    display: block !important;
  }

  .plain-text {
    padding: 10rem 15rem;
  }

  #behind-the-scene {
    padding: 7.5rem;
  }

  .contact {
    padding: 6.5rem 10rem;
  }

  .form-group {
    flex-direction: column;
    column-gap: 5rem;
  }

  #error-page {
    padding: 7.5rem 20rem 5rem 20rem;
  }
}

/* Extra large devices */
@media only screen and (min-width: 1375px) and (max-width: 1700px) {
  .welcome img {
    height: 22.5rem;
  }

  .code {
    padding: 15px 25px 30px 25px;
    max-width: 120%;
    font-size: 1rem;
  }

  .communication {
    padding: 7.5rem 15rem;
  }

  .decoration {
    height: 150px;
  }

  #error-page {
    padding: 10rem 30rem 5rem 30rem;
  }
}