RWD

index.html

<meta name="viewport" content="width=device-width, initial-scale=1">
<div class="container">
  <div class="row clearfix">
    <div class="column full">
      <!-- Your Content -->
      column full
    </div>
  </div>
  <div class="row clearfix">
    <div class="column half">
      <!-- Your Content -->
      column half
    </div>
    <div class="column half">
      <!-- Your Content -->
      column half
    </div>
  </div>
  <div class="row clearfix">
    <div class="column two-thirds">
      <!-- Your Content -->
      column two-thirds
    </div>
    <div class="column third">
      <!-- Your Content -->
      column third
    </div>
  </div>
  
  <div class="row clearfix">
    <div class="column third">
      <!-- Your Content -->
      column third
    </div>
    <div class="column third">
      <!-- Your Content -->
      column third
    </div>
    <div class="column third">
      <!-- Your Content -->
      column third
    </div>
  </div>
  <div class="row clearfix">
    <div class="column half flow-opposite">
      <!-- Your Content -->
      column half flow opposite:
      Add the class .flow-opposite to columns where you want content to display first on mobile but appear on the right on larger screens.
    </div>
    <div class="column half">
      <!-- Your Content -->
      column half
    </div>
  </div>
  <div class="row clearfix">
    <div class="column fourth">
      <!-- Your Content -->
      column fourth
    </div>
    <div class="column fourth">
      <!-- Your Content -->
      column fourth
    </div>
    <div class="column fourth">
      <!-- Your Content -->
      column fourth
    </div>
    <div class="column fourth">
      <!-- Your Content -->
      column fourth
    </div>
  </div>
  
</div>

RWD.markdown

RWD

Learning to control the grid. Following a simple guide to responsive design, made by Adam Kaplan.

A Pen by Tankred on CodePen.

License.

style.css

*, *:before, *:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
/*
With box-sizing: border-box
Borders and padding are drawn inside the set width of your content. The margin is drawn outside.
* = all elements + before and after
*/
body {font-family:monospace,sans-serif;}
.container {
  margin: 0 auto;
  max-width: 48rem;
  width: 90%;
  border:1px dotted red;
}
.clearfix:before,
.clearfix:after {
  content: " ";
  display: table;
}
 
.clearfix:after {
  clear: both;
}
 
.clearfix {
  *zoom: 1;
}
/* Small screens (default) */
html { font-size: 100%; }
 
/* Medium screens (640px) */
@media (min-width: 40rem) { 
  html { font-size: 112%; }
  .column {
    float: left;
    padding-left: 1rem;
    padding-right: 1rem;
    border: 1px dashed blue;
  }
  
  .column.full { width: 100%; }
  .column.two-thirds { width: 66.7%; }
  .column.half { width: 50%; }
  .column.third { width: 33.3%; }
  .column.fourth { width: 25%; }
  .column.flow-opposite { float: right; } 
  
}
 
/* Large screens (1024px) */
@media (min-width: 64rem) { 
  html { font-size: 120%; }
}