Better still, an inline SVG fragment is only 151 bytes - and will save 318 bytes of http header:
<svg viewBox="-32 -32 64 64" width=18 height=18><path fill=#f60 d="M-32-32h64v64h-64z"/><path fill=#fff d="m0-5l-8-12h-7L-3 1v16h6V1l12-18H8z"/></svg>