* {margin: 0; padding: 0;}
* {box-sizing: border-box;}
*::before,
*::after {box-sizing: border-box;}
ul,ol {list-style : none;}
a {
text-decoration: none;
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
// 取消 a 标签在移动端
// 1.点击时的蓝色
// 2.长按弹出菜单
// 3.禁止文本被选中
// 4.阻止在firefox出现背景色
a,
a:active,
a:hover,
a:visited {
-webkit-tap-highlight-color: transparent;
outline : none;
background : none;
-webkit-user-select: none;
-moz-user-focus: ignore ;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
// iOS端禁止长按菜单
-webkit-touch-callout: none;
color : inherit;
}