.cf:after { visibility: hidden; display: block; font-size: 0; content: " "; clear: both; height: 0; } * html .cf { zoom: 1; } *:first-child+html .cf { zoom: 1; } code { padding: 0 .5em; } .rt { width: 100%; font-size: 0.75em;/*12*/ line-height: 1.25em;/*15*/ border-collapse: collapse; border-spacing: 0; } .rt th, .rt td { margin: 0; padding: 0.4166em;/*10*/ vertical-align: top; border: 1px solid #babcbf; } .rt th { text-align: left; } @media only screen and (max-width: 40em) { /*640*/ #rt1 { display: block; position: relative; width: 100%; } #rt1 thead { disp