I have a select drop down with a CSS arrow (and line). If you click anywhere other than the arrow, the drop down opens, but not if you click directly on the arrow. I would like the arrow to be clickable as well.

Here's my code:

```css
.select {
  position: relative;
  z-index: 1;
  background-color: #fff;
  border-radius: 6px;
}

.select:before,
.select:after {
  content: '';
  display: block;
  position: absolute;
  top: 50%;
  z-index: 1;
}

.select:before {
  right: 37px;
  content: '';
  display: block;
  width: 1px;
  height: 22px;
  margin-top: -11px;
  background-color: #636667;
}

.select:after {
  right: 15px;
  width: 0;
  height: 0;
  margin-top: -3px;
  border: transparent 6px solid;
  border-top: #636667 6px solid;
}
```

```html
<div class="select">
  <select class="form-control" id="state-dropdown">
 <option>Select State</option>
  </select>
</div>
```