* {
-webkit-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
user-select:none;
}
input{-webkit-user-select:auto;}
* {
-webkit-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
user-select:none;
}
input{-webkit-user-select:auto;}
background:rgba(0,0,0,0.87); /父透明,子可不透明
background:#000000;opacity: 0.87; /父透明,子跟随透明