.th1,
.th2 {
  overflow: hidden;
}
.th2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.tl {
  text-align: left;
}
.tc {
  text-align: center;
}
.tr {
  text-align: right;
}
.i {
  font-style: italic;
}
.b {
  font-weight: bold;
}
.underline {
  text-decoration: underline;
}
.strike {
  text-decoration: line-through;
}
.ellipsis,
.th1,
.th2 {
  text-overflow: ellipsis;
}
.break {
  word-break: break-all;
}
.nowrap,
.th1 {
  white-space: nowrap;
}
/**
 * components
 */