Rectangle Stack icon

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><path fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M6 6.878V6a2.25 2.25 0 0 1 2.25-2.25h7.5A2.25 2.25 0 0 1 18 6v.878m-12 0c.235-.083.487-.128.75-.128h10.5c.263 0 .515.045.75.128m-12 0A2.25 2.25 0 0 0 4.5 9v.878m13.5-3A2.25 2.25 0 0 1 19.5 9v.878m0 0a2.246 2.246 0 0 0-.75-.128H5.25c-.263 0-.515.045-.75.128m15 0A2.25 2.25 0 0 1 21 12v6a2.25 2.25 0 0 1-2.25 2.25H5.25A2.25 2.25 0 0 1 3 18v-6c0-.98.626-1.813 1.5-2.122"/></svg>