常用css

 1 .unselectable {
 2    -moz-user-select: -moz-none;
 3    -khtml-user-select: none;
 4    -webkit-user-select: none;
 5 
 6    /*
 7      Introduced in IE 10.
 8      See http://ie.microsoft.com/testdrive/HTML5/msUserSelect/
 9    */
10    -ms-user-select: none;
11    user-select: none;
12 }
13 /*整站的话 给body这个属性*/