type-underline

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16"><path d="M5.313 3.136h-1.23V9.54c0 2.105 1.47 3.623 3.917 3.623s3.917-1.518 3.917-3.623V3.136h-1.23v6.323c0 1.49-.978 2.57-2.687 2.57s-2.687-1.08-2.687-2.57zM12.5 15h-9v-1h9z"/></svg>

<i class="ti ti-type-underline"></i>

ti ti-type-underline

<i class="ti ti-025934"></i>

ti ti-025934

<svg aria-hidden="true" focusable="false" xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16"><path d="M5.313 3.136h-1.23V9.54c0 2.105 1.47 3.623 3.917 3.623s3.917-1.518 3.917-3.623V3.136h-1.23v6.323c0 1.49-.978 2.57-2.687 2.57s-2.687-1.08-2.687-2.57zM12.5 15h-9v-1h9z"/></svg>

<svg aria-hidden="true" focusable="false" xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" viewBox="0 0 16 16"><path d="M5.313 3.136h-1.23V9.54c0 2.105 1.47 3.623 3.917 3.623s3.917-1.518 3.917-3.623V3.136h-1.23v6.323c0 1.49-.978 2.57-2.687 2.57s-2.687-1.08-2.687-2.57zM12.5 15h-9v-1h9z"/></svg>

https://cdn.jsdelivr.net/npm/@ticnob/icons@1/icons/type-underline.svg