三角形 clip-path ：before

<div id="clipped2">
  做工
</div>

#clipped2 {
  position: relative;
  display: inline-block;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  box-size: content-box;
  height: 26px;
  font-size: 12px;
  background: #fff;
  border-radius: 2px;
  border: 1px solid red;
  clip-path: polygon(20px 0, 100% 0, 100% 100%, 0 100%, 0 14px);
/*   padding: 0 20px; */
  padding 1.2em;
  text-align: center;
}
#clipped2:before {
  position: absolute;
  left: -2px;
  top: 6px;
  transform: rotate(-35deg);
  content: '';
  width: 25px;
  height: 1px;
  background: red;
}