*,
::before,
::after {
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  /*清除点击默认的高亮效果*/
  -webkit-box-sizing: border-box;
  /*以你的border开始计算你的宽度*/
}
body {

  font-family: "Microsoft YaHei",helvetica, sans-serif;
  /*第二个是手机的一个默认的字体*/
  /*color: #4d4d4d;*/
}
a {
  text-decoration: none;
  /*color: #4d4d4d;*/
  display: block;
}
ul {
  list-style: none;
}
input,
button,
textarea {
  border: none;
  border-radius:0;
  resize: none;
  outline: none;
  /*清除选中效果*/
  -webkit-appearance: none;
  /*清楚浏览器默认的样式*/
}
/*清除浮动*/
.clearfix::before,
.clearfix::after {
  content: ".";
  display: block;
  height: 0;
  line-height: 0;
  visibility: hidden;
  clear: both;
}