disable text selection

1  -webkit-user-select: none;  /* Chrome all / Safari all */
2  -moz-user-select: none;     /* Firefox all */
3  -ms-user-select: none;      /* IE 10+ */
4  user-select: none;          /* Likely future */ 

1
2<div 
3 style="-moz-user-select: none;
4        -webkit-user-select: none;
5        -ms-user-select:none;
6        user-select:none;
7        -o-user-select:none;"
8     
9 unselectable="on"
10 onselectstart="return false;" 
11 onmousedown="return false;">
12    Blabla
13</div>

1#example {
2  user-select:none;
3}

1<div 
2 style="-moz-user-select: none; -webkit-user-select: none; -ms-user-select:none; user-select:none;-o-user-select:none;" 
3 unselectable="on"
4 onselectstart="return false;" 
5 onmousedown="return false;">
6    Blabla
7</div>