body .math{background:#f1f1f1;border:1px solid #ddd;border-radius:3px;-webkit-transition:border-color .15s,background .15s;transition:border-color .15s,background .15s}body .math._focus{background:#f0fbff;border-color:#008ecd}body span.math{padding:.2em;margin:0 .2em}body p.math{padding:.75em;text-align:center;margin:0 0 1.5em}