禁止选择文本样式

.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 */

}