border-bottom

<svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
><path stroke="none" d="M0 0h24v24H0z" fill="none" /><path d="M20 20l-16 0" /><path d="M4 4l0 .01" /><path d="M8 4l0 .01" /><path d="M12 4l0 .01" /><path d="M16 4l0 .01" /><path d="M20 4l0 .01" /><path d="M4 8l0 .01" /><path d="M12 8l0 .01" /><path d="M20 8l0 .01" /><path d="M4 12l0 .01" /><path d="M8 12l0 .01" /><path d="M12 12l0 .01" /><path d="M16 12l0 .01" /><path d="M20 12l0 .01" /><path d="M4 16l0 .01" /><path d="M12 16l0 .01" /><path d="M20 16l0 .01" /></svg>

<i class="ti ti-border-bottom"></i>

ti ti-border-bottom

<i class="ti ti-003559"></i>

ti ti-003559

<svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
><path stroke="none" d="M0 0h24v24H0z" fill="none" /><path d="M20 20l-16 0" /><path d="M4 4l0 .01" /><path d="M8 4l0 .01" /><path d="M12 4l0 .01" /><path d="M16 4l0 .01" /><path d="M20 4l0 .01" /><path d="M4 8l0 .01" /><path d="M12 8l0 .01" /><path d="M20 8l0 .01" /><path d="M4 12l0 .01" /><path d="M8 12l0 .01" /><path d="M12 12l0 .01" /><path d="M16 12l0 .01" /><path d="M20 12l0 .01" /><path d="M4 16l0 .01" /><path d="M12 16l0 .01" /><path d="M20 16l0 .01" /></svg>

<svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
><path stroke="none" d="M0 0h24v24H0z" fill="none" /><path d="M20 20l-16 0" /><path d="M4 4l0 .01" /><path d="M8 4l0 .01" /><path d="M12 4l0 .01" /><path d="M16 4l0 .01" /><path d="M20 4l0 .01" /><path d="M4 8l0 .01" /><path d="M12 8l0 .01" /><path d="M20 8l0 .01" /><path d="M4 12l0 .01" /><path d="M8 12l0 .01" /><path d="M12 12l0 .01" /><path d="M16 12l0 .01" /><path d="M20 12l0 .01" /><path d="M4 16l0 .01" /><path d="M12 16l0 .01" /><path d="M20 16l0 .01" /></svg>

https://cdn.jsdelivr.net/npm/@ticnob/icons@1/icons/border-bottom.svg