Disable text selection with css

1. 

-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;

2.

<div 
 style='-moz-user-select: none; -webkit-user-select: none; -ms-user-select:none; user-select:none;' 
 unselectable='on'
 onselectstart='return false;' 
 onmousedown='return false;'>
    Blabla
</div>