Parent element is adding unnecessary whitespace - html

Question

I am making an image slider and for some reason the parent element is adding whitespace at the bottom of parent div for no reason that I can tell. If there is a better way to set up the css then I would really appreciate a pointer. Here is the code:
HTML:
<div id="imgslider">
<ul class="bxslider">
<li>
<img src="http://localhost:8888/wordpress/wp-content/uploads/2015/08/DevelopImages_PureTisanes_LowRes-11.jpg" alt="" />
</li>
<li>
<img src="http://localhost:8888/wordpress/wp-content/uploads/2015/08/DevelopImages_PureTisanes_LowRes-1.jpg" alt="" />
</li>
</ul>
<div class="clear"></div>
CSS:
#imgslider {
display: block;
height: inherit;
}
.bxslider {
position: relative;
}
.bxslider img {
width: 100%;
max-height: 750px;
position: absolute;
}
.bxslider img:first-child {
top: 0;
left: 0;
z-index: 1;
}

Answer 1

There is a not closed div at the end :-)
Maybe this is what causing the issue:
<div id="imgslider">
<ul class="bxslider">
<li>
<img src="http://localhost:8888/wordpress/wp-content/uploads/2015/08/DevelopImages_PureTisanes_LowRes-11.jpg" alt="" />
</li>
<li>
<img src="http://localhost:8888/wordpress/wp-content/uploads/2015/08/DevelopImages_PureTisanes_LowRes-1.jpg" alt="" />
</li>
</ul>
</div>
<div class="clear"></div>

Answer 2

Not sure it will help but i have read somewhere "clear:both" cause adding some space at bottom so you may want to add "overflow:hidden" to the parent div (i think it is the div with id "imgslider")
#imgslider {
display: block;
height: inherit;
overflow:hidden;
}