Fix size of overlay in HTML tables
In small browser windows, the overlay extended below the view port,
in large windows there was wasted space on the bottom.
@@ -406,7 +406,7 @@ $hover-color: darken(white, 20%);
top: 80px;
right: 20px;
left: 20px;
- height: 80%;
+ bottom: 40px;
background: white;
border: 5px solid grey;
border-radius: 5px;
