CSS Set the small vertical bar in front of the title

On the effect

The small orange vertical bar, even if it achieves the effect, ha , The black next to it is a screenshot that has not been cut well reason

HTML Code

    <div class="recomend-list">
      <h2> Recommended song list </h2>
    </div>

CSS Code

.recomend-list h2 {
    
  position: relative;
  font-size: 18px;
  text-align: left;
  padding-left: 9px;
  height: 40px;
  line-height: 40px;
}
.recomend-list h2:before {
    
  position: absolute;
  content: "";
  background-color: #ec8537;
  width: 4px;
  height: 18px;
  left: 0;
  top: 50%;
  margin-top: -8px;
  -webkit-border-radius: 3px;
  -moz-border-radius: 3px;
  border-radius: 3px;
}

o have to k