examples/assets/material-design/action/ic_class_24px.svg
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<path d="M0 0h24v24h-24z" fill="none"/>
<path d="M18 2h-12c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2v-16c0-1.1-.9-2-2-2zm-12 2h5v8l-2.5-1.5-2.5 1.5v-8z"/>
</svg>