html,
body,
p,
ul {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

body,
textarea,
button,
input,
select {
  font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "微软雅黑", Arial, sans-serif;
  font-size: 14px;
}

// 清除浮动
.clearfix {
  &:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
  }
}