mkdocs-material/material/.icons/fontawesome/solid/wave-square.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 512"><!--! Font Awesome Free 6.4.2 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2023 Fonticons, Inc.--><path d="M128 64c0-17.7 14.3-32 32-32h160c17.7 0 32 14.3 32 32v352h96V256c0-17.7 14.3-32 32-32h128c17.7 0 32 14.3 32 32s-14.3 32-32 32h-96v160c0 17.7-14.3 32-32 32H320c-17.7 0-32-14.3-32-32V96h-96v160c0 17.7-14.3 32-32 32H32c-17.7 0-32-14.3-32-32s14.3-32 32-32h96V64z"/></svg>