Resize Timelapse

index.html

<div id="content">
  <div id="header">深圳市</div>
  <div id="footer">
    <ul>
      <li>1984</li>
      <li>1994</li>
      <li>2002</li>
      <li>2011</li>
      <li>2020</li>
    </ul>
    <div id="resize_animation">
      resize your window
    </div>
  </div>
</div>

resize-timelapse.markdown

Resize Timelapse

How has Shenzhen (China) developed over time?

A Pen by Saijo George on CodePen.

License.

script.js

//Pictures: Google Earth

style.css

@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@100;300;400;700&display=swap");

body {
  margin: 0;
  padding: 0;
  font-family: "Roboto", sans-serif;
}

#content {
  width: 100vw;
  height: 100vh;
  /*1984*/
  background-image: url(https://i.imgur.com/cI4te85.png);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: background-image 0.2s;
}

#header {
  font-size: 6em;
  font-weight: 700;
  color: #fff;
  text-align: center;
  padding-top: 3vh;
  min-width: 300px;
}

#header::after {
  content: "Shenzhen";
  font-size: 0.4em;
  display: block;
  font-weight: 100;
}

#footer {
  background: linear-gradient(rgba(0, 0, 0, 0), rgba(0, 0, 0, 1));
  position: absolute;
  width: 100vw;
  height: 20vh;
  bottom: 0;
}

ul {
  list-style-type: none;
  width: 300px;
  margin: 5vh auto;
  padding: 0;
  color: white;
}
li {
  text-align: center;
  width: 50px;
  margin: 5px;
  float: left;
  font-weight: 100;
}

li:nth-child(1) {
  font-weight: 700;
}

#resize_animation {
  color: #fff;
  position: absolute;
  display: block;
  position: relative;
  width: 140px;
  margin: 12vh auto 0 auto;
  text-align: center;
  font-weight: 100;
}

#resize_animation::before {
  content: "<";
  position: absolute;
  right: 140px;
  animation: left_arrow 2s ease infinite alternate;
}

@keyframes left_arrow {
  0% {
    right: 140px;
  }
  100% {
    right: 150px;
  }
}

#resize_animation::after {
  content: ">";
  position: absolute;
  left: 140px;
  animation: right_arrow 2s ease infinite alternate;
}

@keyframes right_arrow {
  0% {
    left: 140px;
  }
  100% {
    left: 150px;
  }
}

/*1994*/
@media (max-width: 1500px) {
  #content {
    background-image: url(https://i.imgur.com/KByZAEE.png);
  }

  li:nth-child(1) {
    font-weight: 100;
  }

  li:nth-child(2) {
    font-weight: 700;
  }
}

/*2002*/
@media (max-width: 1350px) {
  #content {
    background-image: url(https://i.imgur.com/jq5gXLH.png);
  }

  li:nth-child(2) {
    font-weight: 100;
  }

  li:nth-child(3) {
    font-weight: 700;
  }
}

/*2011*/
@media (max-width: 1200px) {
  #content {
    background-image: url(https://i.imgur.com/MTg0Rj8.png);
  }

  li:nth-child(3) {
    font-weight: 100;
  }

  li:nth-child(4) {
    font-weight: 700;
  }
}

/*2020*/
@media (max-width: 1050px) {
  #content {
    background-image: url(https://i.imgur.com/1O83EH0.png);
  }

  li:nth-child(4) {
    font-weight: 100;
  }

  li:nth-child(5) {
    font-weight: 700;
  }
}