.contentWrap {
  width: 1200px;
  margin: 0 auto;
}
.none {
  display: none;
}
.tc {
  text-align: center;
}
* {
  box-sizing: border-box;
}
.ellipsis {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.placeholder {
  opacity: 0.5;
  filter: alpha(opacity=50);
}