1
<svg viewBox="0 0 9 9" xmlns="http://www.w3.org/2000/svg"><path d="m1 1v7h7v-7z" fill="#f47750" opacity=".8"/><path d="m0 0v8 1h8 1v-9h-1-7zm1 1h7v7h-7z" fill="#fff" opacity=".8"/></svg>