unselectable css code example

Example 1: how to make text not highlightable css

-webkit-user-select: none; /* Safari */        
-moz-user-select: none; /* Firefox */
-ms-user-select: none; /* IE10+/Edge */
user-select: none; /* Standard */

Example 2: unselectable css property

.button {
    user-select: none;
}