<details class="details">
  <summary>Filters</summary>
  <div class="category_filter_box categoryfilter asp_sett_scroll summary-text">
    <p>Some copy here that will be tied to the filter button</p>
  </div>
</details>

.details {
  max-width:50%;
  min-width: 150px;
  background: teal;
  border: 1px solid #000;
  border-radius: 5px;
}
.details summary {
  cursor: pointer;
  border-radius: 5px;
  background: cyan;
  padding: 5px 10px;
}
.summary-text {
  padding: 5px 10px;
}