html,body{width:100%;height:100%;padding:0;margin:0;overflow:hidden}body{font:14px "Lucida Grande",Helvetica,Arial,sans-serif;background-color:#f5f5f5;color:#333;display:flex;flex-direction:column}a{color:#00B7FF;text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{color:#333}.main{flex:1 0 0;display:flex;justify-content:center;align-items:center}.main h1{font-size:40px}.footer{height:60px;display:flex;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;color:#CCC}