<svg viewbox="0 0 18 18">
  <line class="ql-stroke" x1="7" x2="13" y1="4" y2="4"></line>
  <line class="ql-stroke" x1="5" x2="11" y1="14" y2="14"></line>
  <line class="ql-stroke" x1="8" x2="10" y1="14" y2="4"></line>
</svg>