body {
  margin:0;
  /* font-size: .3125rem; */
  color: #222222;
}
* {
  box-sizing: border-box;
}
a {
	text-decoration: none; /* 去除默认的下划线 */
	outline: none;	/* 去除旧版浏览器的点击后的外虚线框 */
  color: #222222;
}
html {
  font-size: 96px;
}