stairs-fill-2

<svg fill="currentColor" xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 -960 960 960"><path d="M250-250h157v-133h103v-133h103v-134h97v-60H553v133H450v133H347v134h-97v60Zm-70 130q-24 0-42-18t-18-42v-600q0-24 18-42t42-18h600q24 0 42 18t18 42v600q0 24-18 42t-42 18H180Z"/></svg>

<i class="ti ti-stairs-fill-2"></i>

ti ti-stairs-fill-2

<i class="ti ti-038851"></i>

ti ti-038851

<svg aria-hidden="true" focusable="false" fill="currentColor" xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 -960 960 960"><path d="M250-250h157v-133h103v-133h103v-134h97v-60H553v133H450v133H347v134h-97v60Zm-70 130q-24 0-42-18t-18-42v-600q0-24 18-42t42-18h600q24 0 42 18t18 42v600q0 24-18 42t-42 18H180Z"/></svg>

<svg aria-hidden="true" focusable="false" fill="currentColor" xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 -960 960 960"><path d="M250-250h157v-133h103v-133h103v-134h97v-60H553v133H450v133H347v134h-97v60Zm-70 130q-24 0-42-18t-18-42v-600q0-24 18-42t42-18h600q24 0 42 18t18 42v600q0 24-18 42t-42 18H180Z"/></svg>

https://cdn.jsdelivr.net/npm/@ticnob/icons@1/icons/stairs-fill-2.svg