a:focus,button:focus,inpu:focus,select:focus {
			outline: #ff0000 solid thin !important;
		}
		/* 隱藏元素（僅供螢幕閱讀器使用） */
		.sr-only {
			position: absolute;
			width: 1px;
			height: 1px;
			padding: 0;
			margin: -1px;
			overflow: hidden;
			clip: rect(0, 0, 0, 0);
			white-space: nowrap;
			border: 0;
		}

		/* 當聚焦時顯示元素 */
		.sr-focusable:focus {
			position: static;
			width: auto;
			height: auto;
			margin: 0;
			overflow: visible;
			clip: auto;
			white-space: normal;
			outline: #ff0000 solid thin !important;
		}