Nested DIV with inline-block in Safari causes sibling elements of parent to be misaligned - safari

Question

I am trying to align a set of "buttons" made out of DIV elements that are arranged along the bottom of a web page using the CSS display: inline-block. I've attached a fiddle which illustrates the issue.
The problem is that this current code works on all modern browsers except Safari (7, 8). I don't know if this is a bug in WebKit that Safari uses, or something that I've allowed to happen by not using the right incantations.
The thing that triggers the unwanted behavior is the nested DIV.btn-sub; however, removing that text is not an option to "fix" the issue.
Here's the expected behavior (snap taken from Firefox 34, similar behavior on IE 9, 10, and latest Chrome):
Here's what happens on Safari:
Any help here would be appreciated!

Answer 1

It's usually best practice to use a list when creating inline-blocked elements in a row/list, such as a navigation.
The issue here seems to be the block being set with a padding directly; relative it's parent. Which somehow is turning it into a margin or something similar.
You can try stripping CSS until you get a full height out of the blocks, and then add another inner div which you can call .btn-padding which contains your top padding.
Here is similar.
body, html {
height: 100%;
margin: 0;
background: green;
}
#wrap {
display: block;
width: 100%;
position: fixed;
bottom: 0px;
height: 50px;
border:0;
background-color: blue;
color: #fff;
}
#btnls {
display: block;
list-style-type: none;
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#btnls li {
display: inline-block;
margin-right: 10px;
background-color: purple;
min-width: 158px;
max-width: 300px;
height: 50px;
text-align: center;
vertical-align: middle;
cursor: pointer;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
#btnls li .btn-padding {
display: block;
padding-top: 10px;
width: 100%;
height: 50px;
}
#btnls li .btn-padding .sub-btn {
display: block;
font-size: x-small;
margin: 0;
padding: 0
}
<div id="wrap">
<ul id="btnls">
<li>
<div class="btn-padding">Foo
<div class="sub-btn">Bar</div>
</div>
</li>
<li>
<div class="btn-padding">Foo</div>
</li>
<li>
<div class="btn-padding">Foo</div>
</li>
</ul>
</div>