Opera handles padding-bottom with rules written for padding-top?
this is:
	body > div#soul > div#probe {
			height: 100%;		/* see below */
			background: red;
			overflow: hidden;	/* just for better expression of the mess */ }
contained in:
	body > div#soul {
		height: 100%;		/* that means whole visible BODY
		padding-top: 10%;	/* that means the space above the red area */
		padding-bottom: 0;	/* that means NO grey space between the red area 
			and the blue border of the "BODY" - see below */
		border: 2px solid blue; 
		background: #444; }
(tested on Opera Version 7.54 Build 3865)