html { font-size: 100%; overflow-y: scroll; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; background:#fff; }
body { margin: 0; font-size: 13px; line-height: 1.231; }
body, button, input, select, textarea { font-family: sans-serif; color: #222; }
img{
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  max-width: 100%;
  max-height: 100%;
}