grid-core.css

body {
    margin: 0;
}

.col, .width-fit, .width-fill, .cell {
    display:block;
}

section, article, header, footer, aside, nav, main, dialog, .col, .width-fit {
    float:left;
    min-height:1px;
    width:100%;
}

.cell {
    margin:10px;
    position:relative;
}

.width-fit {
    width:auto;
}

.width-fill {
    display:table-cell;
    float:none;
    min-width:50px;
    width:10000px;
}

.site-center {
    position:relative;
    float:none !important;
    margin-left:auto !important;
    margin-right:auto !important;
    width:920px;
    min-width:200px;
}

section:after,article:after,header:after,footer:after,aside:after,nav:after,main:after,dialog:after,
.col:after,.width-fit:after,.width-fill:after, .col:after, .cell:after {
    clear:both;
}

section:after,article:after,header:after,footer:after,aside:after,nav:after,main:after,dialog:after,
.col:after,.width-fit:after,.width-fill:after, .cell:after,
section:before,article:before,header:before,footer:before,aside:before,nav:before,main:before,dialog:before,
.col:before,.width-fit:before,.width-fill:before, .cell:before {
    content:""; display:table;
}