/* Safari 6.1-10.0 (10.1 is the latest version of Safari at this time) */

@media screen and (min-color-index:0) 
and(-webkit-min-device-pixel-ratio:0) { @media
{
        main, footer, footer .subfooter div,footer .subfooter {
            display: inline-block;
            width: 100%;
            box-sizing: border-box;
        }
        .contenido-principal {
            display: inline-block;
            width: 100%;
            float: left;
        }
        .sidebar {
            display: inline-block;
            width: 100%;
            float: left;
        }
        
}}