silverstripe-docsviewer/css/forms.css

fieldset { 
	border: none; 
	margin: 0;
	padding: 0 0 5px 0;
}

#DocumentationAdvancedSearchForm_AdvancedSearchForm_q {
	width: 100%;
	font-size: 15px;
	padding: 10px 10px;
}

#DocumentationAdvancedSearchForm_AdvancedSearchForm #q {
	width: 55%;
	padding-right: 2%;
	float: left;
}

#DocumentationAdvancedSearchForm_AdvancedSearchForm #Entities {
	width: 25%;
	padding-right: 2%;
	float: left;
}

#DocumentationAdvancedSearchForm_AdvancedSearchForm #Versions {
	width: 20%;
	float: right;
}

.optionset ul {
	margin: 0;
}
.optionset li {
	list-style: none;
}