h1{text-align:center}#mainNav{background-color:#64a19d !important}#introduction p{max-width:900px;margin:30px auto}#introduction .icon{float:left;height:100px;margin-top:10px}.auto-resizable-iframe{max-width:800px;margin:0 auto}.auto-resizable-iframe>div{position:relative;padding-bottom:75%;height:0}.auto-resizable-iframe iframe{position:absolute;top:0;left:0;width:100%;height:100%}