div { font-family:0swald;
    color:#333;
    text-align:center;
    text-transform: uppercase;
    padding: 40px 0; }
.section { float:left;
           width:25%;
           height: 200px;
           margin-bottom:10px; }
.s1, .s3 {background-color: #ddd;}
.s2, .s4 {background-color: #ccc;}
#header
#footer { clear: left;
          width:100%;
          height:100px;
          background-color:#eee;
          margin:10px 0;  
}