/* selector for element and children */
#parent-element,#parent-element *,#parent-element a:hover,#parent-element a:visited,#parent-element a:active{
	background:none;
	border:none;
	bottom:auto;
	clear:none;
	cursor:default;
	/* didn't really know what the default for display should be*/
	/*display:inline;*/
	float:none;
	font-family:Arial, Helvetica, sans-serif;
	font-size:medium;
	font-style:normal;
	font-weight:normal;
	height:auto;
	left:auto;
	letter-spacing:normal;
	line-height:normal;
	max-height:none;
	max-width:none;
	min-height:0;
	min-width:0;
	overflow:visible;
	position:static;
	right:auto;
	text-align:left;
	text-decoration:none;
	text-indent:0;
	text-transform:none;
	top:auto;
	visibility:visible;
	white-space:normal;
	width:auto;
	z-index:auto;
}

/* selector for element and children
#parent-element,#parent-element *,#parent-element a:hover,#parent-element a:visited,#parent-element a:active{
	background:none;
	border:none;
	bottom:auto;
	clear:none;
	cursor:default;
	/* didn't really know what the default for display should be*/
	/*display:inline;*/
	float:none;
	font-family:Arial, Helvetica, sans-serif;
	font-size:medium;
	font-style:normal;
	font-weight:normal;
	height:auto;
	left:auto;
	letter-spacing:normal;
	line-height:normal;
	max-height:none;
	max-width:none;
	min-height:0;
	min-width:0;
	overflow:visible;
	position:static;
	right:auto;
	text-align:left;
	text-decoration:none;
	text-indent:0;
	text-transform:none;
	top:auto;
	visibility:visible;
	white-space:normal;
	width:auto;
	z-index:auto;
}

http://www.w3schools.com/css/css_reference.asp

This will reset your style properties to the default values, specific to an element and its children.
Here are the all the properties that need to be set to default that also don't break modern browsers.... or less then modern, like IE 4/5.

Element specific CSS reset

css

CSS