Google Charts Bar Shadows

is there a way to get rid of the shadows in when I hover the bars in a chart? I am able to do so on the tooltip, but have not found a way to do so on the bar itself. in this instan

Solution 1:

This css-rule seems to work:

rect[stroke-opacity]{
   stroke-width:0!important;
}

https://jsfiddle.net/kghv82yc/