Formatting background gradient

I was able to modify the site background with the CSS snippet:

body {
	
background: #ffffff;
	background: -moz-linear-gradient(top,  #ffffff 0%, #a5b9d6 100%);
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ffffff), color-stop(100%,#a5b9d6));
	background: -webkit-linear-gradient(top,  #ffffff 0%,#a5b9d6 100%);
	background: -o-linear-gradient(top,  #ffffff 0%,#a5b9d6 100%);
	background: -ms-linear-gradient(top,  #ffffff 0%,#a5b9d6 100%);
	background: linear-gradient(to bottom,  #ffffff 0%,#a5b9d6 100%);
	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#a5b9d6',GradientType=0 );
}

This creates the gradient from top to bottom. However, I’d the effect to be a little bit more complex. In PowerPoint, this is easily achievable by simply changing the gradient type to path or some other type. I tried modifying GradientType to 1 or 2 in the last line but nothing changed. Thanks.

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