#navigation1 { float: left; width: 15%; background-color: navy;
               margin-top: 0em; height:50em;}
#navigation2 { float: right; width: 15%; background-color: navy;
               margin-top: 0em; height:50em}
#content { float: center; width: 100%; margin-top: 0em; background-color: silver;
          height: 50em;
          }