.clearfix:after {
    content:                ".";
    display:                block;
    clear:                  both;
    visibility:             hidden;
    line-height:            0;
    height:                 0;
}
.clearfix {
    display:                inline-block;
}
html[xmlns] .clearfix {
    display:                block;
}
* html .clearfix {
    height:                 1%;
}