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A Pen By Andi Norris

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About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

     

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About Vendor Prefixing

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.

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HTML

            
              <div class="columns large-2 show-for-large-up">
  <div class="animated-wrapper menu-wrapper">
    <div class="animated-background">
      <div class="block-out-box left height-100 width-10"></div>
      <div class="block-out-box right height-100 width-10"></div>
      <div class="block-out-circle"></div>
      <div class="block-out-box circle-bottom"></div>

      <div class="block-out-box mt-15 height-20 width-100"></div>
      <div class="block-out-box mt-10 height-10 width-100"></div>
      <div class="block-out-box mt-10 height-100 width-100"></div>
      <div class="block-out-box height-100 width-100"></div>
      <div class="block-out-box height-100 width-100"></div>
    </div>
  </div>
</div>

<div class="columns small-12 medium-12 large-10">
  <div class="columns large-4 large-push-8 show-for-large-up">
    <div class="animated-wrapper sidebar-wrapper">
      <div class="animated-background">
        <div class="block-out-box height-30 width-100"></div>
        <div class="block-out-box mt-350 height-15 width-100"></div>
        <div class="block-out-box mt-15 height-10 width-100"></div>
        <div class="block-out-box height-10 width-30 right"></div>
        <div class="block-out-box mt-10 height-50 width-100"></div>
      </div>
    </div>
  </div>
 
  <div class="columns hide-for-large-up">
    <div class="animated-wrapper sidebar-mobile-wrapper">
      <div class="animated-background">
        <div class="small-8 medium-10 right">
          <div class="block-out-box height-200 width-4 left"></div>
          <div class="block-out-box mt-30 height-10 width-100"></div>
          <div class="block-out-box height-10 width-40 right"></div>
          <div class="block-out-box mt-10 height-150 width-100"></div>
        </div>
      </div>
    </div>
  </div>
 
  <div class="columns large-8 large-pull-4">
    <div class="section-tab small-8 medium-4"></div>
    <div class="animated-wrapper metapanel-wrapper">
      <div class="animated-background">
        <div class="block-out-box height-10 width-100"></div>
        <div class="block-out-box right height-30 width-40"></div>
        <div class="block-out-box mt-30 height-10 width-100"></div>
        <div class="block-out-box right height-10 width-70"></div>
        <div class="block-out-box mt-10 height-40 width-100"></div>
        <div class="block-out-box mt-200 height-60 width-100"></div>
      </div>
    </div>
    <div class="section-tab small-8 medium-4"></div>
    <div class="animated-wrapper update-wrapper">
      <div class="animated-background">
        <div class="block-out-box height-10 width-100"></div>
        <div class="block-out-box right height-30 width-40"></div>
        <div class="block-out-box mt-30 height-10 width-100"></div>
        <div class="block-out-box right height-10 width-70"></div>
        <div class="block-out-box mt-10 height-40 width-100"></div>
        <div class="block-out-box mt-120 height-60 width-100"></div>
      </div>
    </div>
  </div>
</div>
!

CSS

            
              body {
  background: #F2F2F2;
}

@for $i from 1 through 400 {
  .mb-#{$i} {
    margin-bottom: #{$i}px;
  }
  
  .mt-#{$i} {
    margin-top: #{$i}px;
  }
  
  .ml-#{$i} {
    margin-left: #{$i}px;
  }
  
  .width-#{$i} {
    width: percentage($i/100);
  }
  
  .height-#{$i} {
    height: #{$i}px;
  }
}

@keyframes placeHolderShimmer{
    0%{
        background-position: 100% 0
    }
    100%{
        background-position: 0 0
    }
}

.animated-background {
    animation-duration: 2s;
    animation-fill-mode: forwards;
    //animation-iteration-count: infinite;
    animation-name: placeHolderShimmer;
    animation-timing-function: linear;
    background: #eeeeee;
    background: linear-gradient(to right, #eeeeee 0%, #eeeeee 50%, #ffffff 75%);
    background-size: 500% 100%;
    height: 100%;
    width: 100%;
    position: relative;
}

.black-background {
  background-color: black;
  height: 500px;
  width: 100%;
}

.animated-wrapper {
  box-sizing: border-box;
  padding: 10px 20px;
  background-color: #fff;
  overflow: hidden;
  
  &.menu-wrapper {
    width: 100%;
    float: left;
  }
  
 &.update-wrapper {
    width: 100%;
    height: 300px;
  }
  
  &.sidebar-wrapper {
    width: 100%;
    height: 500px;
  }
  
  &.sidebar-mobile-wrapper {
    width: 100%;
    height: 150px;
    margin-top: 20px;
  }
}

.left {
  float: left;
}

.right {
  float: right;
}

.block-out-circle{
  position:relative;
  margin:20px auto 0;
  width: 80%;
  padding-top: 80%;
  box-shadow: 0 0 0 50px #fff;
  border-radius:50%;
}

.block-out-box {
  background: #fff;
  
  &.circle-bottom {
    height: 50px;
    width: 100%;
    margin: 0px auto;
  }
}

.section-tab {
  background: #fff;
  height: 40px;
  margin-top: 30px;
}

.left-column {
  width: 17%;
}

.middle-column {
  width: 55%;
  margin: 0 20px;
}

.right-column {
  width: 25%;
}

.show-for-large-up {
  display: none;
  @media only screen and (min-width: 64.063em) {
    display: block;
  }
}

.hide-for-large-up {
  display: block;
  @media only screen and (min-width: 64.063em) {
    display: none;
  }
}
!

JS
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