css 文字禁止选中

.noselect {

-webkit-touch-callout: none; /* iOS Safari */

-webkit-user-select: none; /* Chrome/Safari/Opera */

-khtml-user-select: none; /* Konqueror */

-moz-user-select: none; /* Firefox */

-ms-user-select: none; /* Internet Explorer/Edge */

user-select: none; /* Non-prefixed version, currently not supported by any browser */

}