CodePen

HTML

            
              
<footer>
  <div class="container"> 
    FOOTER CONTENT
  </div>
</footer>
            
          
!
via HTML Inspector

CSS

            
              footer {
  background:lightgrey;
}

.container {
  width:960px;
  margin:0 auto;
  height:100px;
  background:lightblue;
}
            
          
!
? ?
? ?
Must be a valid URL.
+ add another resource
via CSS Lint

JS

            
              
            
          
!
Must be a valid URL.
+ add another resource
via JS Hint
Loading ..................