logo.css

/* create the ErrRight logo div */

#logo {

    float: left;
    position: fixed;
    margin-left: 5px;
    top: 5px;
    width: 20%;
/*    width: 200px; */
    height: 200px; 
/*    height: 20%; */
/*    margin: 0 auto; */
    padding: 0;
   content: url("http://i.imgur.com/4rMdMdO.png"); 
    
}

/* support for logo in firefox */
#logo::before {

    float: -moz-left;
    position: fixed;
    margin-left: 5px;
    top: 5px;
    width: 200px;
    max-height: 200px; 
    margin: 0 auto;
    padding: 0;
    content: url("http://i.imgur.com/4rMdMdO.png"); 
    display: inline-block; 
    overflow: hidden; 
    
}