If we want a dropdown menu which shows option without affecting any other things on the page then we can use dropdown menu.
Ex:
<li class=”dropdown dropdown-large”>
<div class=”newspaper btn-group show-on-hover”>
<button type=”button” class=”btn btn-warning dropdown-toggle” data-toggle=”dropdown”>Categories</button>
<ul class=”dropdown-menu” style=”height:400px;width:800px”>
<ul class=”col-md-12 row”>
<li class=”col-md-3″ ng-repeat=”activecategories in activecategoriesData”><a ui-sref=”ChooseCategory({id:activecategories.ID})” ng-mouseover=”HoverInCat(activecategories.ID)” ng-mouseout=”HoverOutCat(activecategories.ID)” id=”CatName_{{activecategories.ID}}” style=”cursor:pointer”><b>{{activecategories.Name}}</b></a><br></li>
</ul>
</ul>
</div>
</li>