* {
  padding: 0;
  margin: 0;
  /* list-style: none; */
  font-family: "微软雅黑";
}

html,
body,
.viewport {
  width: 100%;
  height: 100%;
}

a {
  text-decoration: none;
}

.viewport {
  min-width: 1200px;
}

.clearfix {
  clear: both;
}

.m_auto {
  margin: 0 auto;
}

.w_1190 {
  width: 1190px;
}

.m_r_15 {
  margin-right: 15px;
}

.f_l {
  float: left;
}

.f_r {
  float: right;
}