It is very simple to define the style properties of elements as with any other .NET Web Control, eg;
<IgnoreButton Style="font-family:'Tahoma,Arial,Helvetica';font-size:10pt; border:1px solid #b5bed6; background-color:#dddddd; width: 90px;" onMouseOver="this.style.backgroundColor='#b5bed6';this.style.borderColor='#08246b';" onMouseOut="this.style.backgroundColor='#dddddd';this.style.borderColor='#b5bed6';" />
This specifies the style using regular CSS syntax and also specifies onMouseOver/Out Javascript events to modify the style for an attractive effect. An alternative to setting the Style property is the CssClass property which can be used to specify a CSS class for the element.