.g { margin:0px; padding:0px; overflow:hidden; line-height:1; zoom:1; } .g img { height:auto; } .g-col { position:relative; float:left; } .g-col:first-child { margin-left: 0; } .g-col:last-child { margin-right: 0; } .g-1 {  margin: 0 auto; } .g-4 { margin:0px;  width:auto; height:auto; } @media only screen and (max-width: 480px) { .g-col, .g-dyn, .g-single { width:100%; margin-left:0; margin-right:0; } }