html, body {
  margin: 0;
  background-color: #c8c8c8;
  height: 100%;
  font-size: 14px;
  overflow: auto;
  -ms-overflow-style: -ms-autohiding-scrollbar;
}

div {
  box-sizing: border-box;
}

html:lang(en) {
  font-family: 'Clear Sans', 'Microsoft JhengHei', sans-serif;
}

html:lang(zh-TW) {
  font-family: 'Clear Sans', 'Microsoft JhengHei', sans-serif;
}