Pure CSS Split Screen Loader

index.html

<div class="container">
  <div class="split-screen"></div>
  <div class="background-image"></div>
  <div class="content">
    <p>Hello <span class="comma">,</span></p>
    <p>World</p>
  </div>
</div>

pure-css-split-screen-loader.markdown

Pure CSS Split Screen Loader

A split screen loader built with CSS

A Pen by Envato Tuts+ on CodePen.

License.

style.css

@import url("https://fonts.googleapis.com/css?family=Montserrat:900");

body {
  margin: 0;
  box-sizing: border-box;
  overflow: hidden;
  font-family: "Montserrat", sans-serif;
  background-color: #b1bcbf;
}

.container {
  width: 100%;
  height: 100vh;
  position: relative;
}

.background-image {
  width: 50%;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  margin: auto;
  background-image: url("https://images.pexels.com/photos/1261728/pexels-photo-1261728.jpeg");
  background-size: cover;
}

.split-screen {
  width: 100%;
  background-color: #2c2d2b;
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 2;
  animation: 
    reduceSize 1.5s 0.5s, 
    moveRight 1.5s 3s;
  animation-fill-mode: forwards;
}

.content {
  color: white;
  font-size: 10vw;
  text-transform: uppercase;
  position: absolute;
  width: fit-content;
  height: fit-content;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  z-index: 4;
  opacity: 0;
  transform: translateY(100vh);
  animation: 
    fadeInUp 2s 0.5s, 
    moveRight 1.5s 3s,
    changeBackground 1.5s 3s;
  animation-fill-mode: forwards;
}

.content p {
  margin: 0;
}

.content .comma {
  color: #2c2d2b;
  opacity: 1;
  animation: fadeOut 0.5s forwards 2.5s;
}

@keyframes reduceSize {
  from {
    width: 100%;
  }
  to {
    width: 50%;
  }
}

@keyframes fadeInUp {
  from {
    transform: translateY(100vh);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes moveRight {
  from {
    left: 0%;
  }
  to {
    left: 50%;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

@keyframes changeBackground {
  to {
    background-image: url("https://images.pexels.com/photos/1261728/pexels-photo-1261728.jpeg");
    background-size: 200%;
    background-position: center;
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
  }
}