* {
  padding: 0;
  margin: 0;
}
body {
  font-family: "微软雅黑";
}
ul,
li {
  list-style: none;
}
a {
  text-decoration: none;
  color: #333;
}
.right {
  float: right;
}
.left {
  float: left;
}
.clear {
  clear: both;
}
.auto {
  margin: 0 auto;
}
.content {
  width: 1200px;
  margin: 0 auto;
}