body {
  margin: 0;
  font: 12px/1 "Microsoft YaHei", Tahoma, Arial, Helvetica, sans-serif;
  color: black;
}
p,
dl,
dd,
ol,
ul {
  margin: 0;
  padding: 0;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: normal;
}
ul,
li,
ol {
  list-style: none;
}
input {
  margin: 0;
  padding: 0;
}
table {
  border-spacing: 0;
  border-collapse: collapse;
}
td {
  padding: 0;
}
img {
  border: none;
  vertical-align: middle;
}
button,
input,
textarea {
  margin: 0;
  padding: 0;
  background: none;
  font-family: inherit;
  vertical-align: middle;
  outline: none;
  border: none;
  /* 去掉输入框点击时出现的轮廓框 */
}
a {
  text-decoration: none;
  color: #333333;
}
i,
em {
  font-style: normal;
}
b,
strong {
  font-weight: normal;
}
.clearfix::after {
  content: "";
  display: block;
  clear: both;
}
.clearfix {
  *zoom: 1;
}