滚动条

/* Legacy browsers with `::-webkit-scrollbar-*` support */
@supports selector(::-webkit-scrollbar) {
	*::-webkit-scrollbar {
		width: 4px;
		height: 4px;
	}

	*::-webkit-scrollbar-thumb {
		background: #c9cdd4;
		border-radius: 5px;
	}
}

@supports not (selector(::-webkit-scrollbar)) {
	* {
		scrollbar-width: thin;
		scrollbar-color: #c9cdd4 #c9cdd4;
	}
}