html {
  font-family: "Microsoft YaHei", serif;
  font-size: 14px;
}
body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
pre,
fieldset,
button,
input,
textarea,
th,
td {
  margin: 0;
  padding: 0;
}
ul,
ol {
  list-style: none;
}
/* 重置文本格式元素 */
a {
  text-decoration: none;
}
/* 重置表格元素 */
table {
  border-collapse: collapse;
  border-spacing: 0;
}
/*图片块化与去掉ie边框*/
img {
  border: 0;
}
/*清除浮动*/
.clear::after{
  display: block;
  content: "";
  width: 0;
  height: 0;
  clear: both;
}