@import "variables"; .vn-radio { & > .btn { border-radius: 50%; & > .mark { transition: background 250ms; } } &.checked > .btn { border-color: $color-main; & > .mark { position: absolute; border-radius: 50%; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 10px; height: 10px; background-color: $color-main; } } &.disabled.checked > .btn > .mark { background-color: $color-font-secondary; } }