.cbox{display:inline-grid;place-items:center;flex:none;box-sizing:border-box;width:18px;height:18px;border-radius:var(--r6);border:1.5px solid var(--ink3);background:transparent;color:var(--void);transition:background-color .12s ease,border-color .12s ease}button:not(:disabled):hover>.cbox:not(.on){border-color:var(--ink2)}.cbox.on{border-color:var(--ink);background:var(--ink)}.cbox.is-fixed{opacity:.5}.cbox svg{display:block}