mkdocs-material/material/templates/.icons/simple/toggltrack.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 0a12 12 0 1 0 0 24 12 12 0 0 0 0-24m-.883 4.322h1.766v8.757h-1.766zm-.74 2.053v1.789a4.448 4.448 0 1 0 3.247 0V6.375a6.146 6.146 0 1 1-5.669 10.552 6.145 6.145 0 0 1 2.421-10.552z"/></svg>