.tab {
  border-width: 0 0 0 1px;
}

.p_pre {
  padding: 2px 10px 2px 2px;
}

.p_tabs {
  padding: 2px 10px;
}

.p_space {
  margin: 0 7px 0 3px;
  border-width: 0 0 0 1px;
}

.c {
  text-align: center;
}

.mt1 {
  margin-top: 1px;
}

.zi1 {
  z-index: 1;
  position: relative;
}

.zi2 {
  z-index: 2;
  position: relative;
}

.bgfff {
  background-color: #fff;
}