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HTML

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About the <head>

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!
Insecure Resource

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CSS

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CSS Base

About CSS Base

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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <!DOCTYPE html>
<html>
    <head>
        <link rel="stylesheet" href="background_styles.css">
        <link rel="stylesheet" href="styles.css">
        <title>Animated Loading Spinner</title>
    </head>
    <body>
      <div class="spinner">
        <div class="spinner-text">Loading</div>
        <div class="spinner-sector spinner-sector-red"></div>
        <div class="spinner-sector spinner-sector-blue"></div>
        <div class="spinner-sector spinner-sector-green"></div>
      </div>
      
      
     
      
      
      
      
      
      
      
      
      
      
      <!-- Side Links Only -->
      <div class="side-links">
        <a href="https://youtu.be/7Hl2qa7-Bfc" target="_blank" class="side-link side-link-youtube">
          <i class="fab fa-youtube-square side-link-icon"></i>
          <span class="side-link-text">View Tutorial</span>
        </a>
        <a href="https://github.com/WebDevSimplified" target="_blank" class="side-link side-link-github side-link-icon">
          <i class="fab fa-github-square"></i>
          <span class="side-link-text">View GitHub</span>
        </a>
        <a href="https://twitter.com/DevSimplified" target="_blank" class="side-link side-link-twitter">
          <i class="fab fa-twitter-square side-link-icon"></i>
          <span class="side-link-text">View Twitter</span>
        </a>
      </div>
    </body>
</html>
!

CSS 

              
                * {
    box-sizing: border-box;
}

.spinner {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 300px;
    height: 300px;
}

.spinner-sector {
    border-radius: 50%;
    position: absolute;
    width: 100%;
    height: 100%;
    border: 15px solid transparent;
    mix-blend-mode: overlay;
}

.spinner-text {
    animation: loading-opacity 3s ease-in-out infinite;
    font-size: 2em;
}

.spinner-sector-blue {
    animation: rotate 2s ease-out infinite;
    border-top: 15px solid lightblue;
}

.spinner-sector-red {
    animation: rotate 2.5s ease-in infinite;
    border-top: 15px solid lightcoral;
}

.spinner-sector-green {
    animation: rotate 1.5s ease-in-out infinite;
    border-top: 15px solid lightgreen;
}

@keyframes rotate {
    from { transform: rotate(0); }
    to { transform: rotate(360deg); }
}

@keyframes loading-opacity {
    0%, 100% {
        opacity: 1;
    }
    25%, 75% {
        opacity: .5;
    }
    50% {
        opacity: .1;
    }
}














/* Background Styles Only */

@import url('https://fonts.googleapis.com/css?family=Raleway');

* {
    font-family: Raleway;
}

html {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #DFDFDF;
}

.side-links {
  position: absolute;
  top: 15px;
  right: 15px;
}

.side-link {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  margin-bottom: 10px;
  color: white;
  width: 180px;
  padding: 10px 0;
  border-radius: 10px;
}

.side-link-youtube {
  background-color: red;
}

.side-link-twitter {
  background-color: #1DA1F2;
}

.side-link-github {
  background-color: #6e5494;
}

.side-link-text {
  margin-left: 10px;
  font-size: 18px;
}

.side-link-icon {
  color: white;
  font-size: 30px;
}
!

JS
!
999px

Console