One would have to use CSS to increase the size. The shortest version would be to use CSS transform
. Depending on the scenario it might be needed to do some other adjustments as well, but a good starting point is:
.DVSL-bar-horizontal, .DVSL-bar-vertical {
-ms-transform: scale(1.5,1.5);
-webkit-transform: scale(1.5,1.5);
transform: scale(1.5,1.5);
}
Example: http://jsfiddle.net/rk2f87cm/