Display:block not working - css

Question

I am trying to set up navigation links (using a list) that are entirely clickable. However, right now only the text and images are clickable. Display block doesn't seem to be working.
Here is the final result: http://rec.wordpress.uconn.edu
#program-buttons {
display:block;
width:100%;
height:65px;
background-color:#cccccc;
}
.program-button {
display:block;
float: left;
font-size: 14px;
height: 45px;
line-height: 17px;
list-style-type: none;
margin:0;
padding: 10px;
width: 208px;
vertical-align:middle;
border-left: solid 1px #ffffff;
border-right: solid 1px #8C8C8C;
transition: background 0.4s ease;
-webkit-transition: background 0.4s ease;
-o-transition: background 0.4s ease;
-moz-transition: background 0.4s ease;
}
.program-button:hover {
background-color:#202631;
}
#program-buttons .program-button a {
display:block;
color:#fff;
font-weight:bold;
}
#program-butt ons .program-button a:hover {
text-decoration:none;
}
#program-buttons img {
background-clip: border-box;
background-color: rgba(0, 0, 0, 0);
background-image: none;
background-origin: padding-box;
border-bottom-color: rgb(255, 255, 255);
border-bottom-style: solid;
border-bottom-width: 1px;
border-left-color: rgb(255, 255, 255);
border-left-style: solid;
border-left-width: 1px;
border-right-color: rgb(255, 255, 255);
border-right-style: solid;
border-right-width: 1px;
border-top-color: rgb(255, 255, 255);
border-top-style: solid;
border-top-width: 1px;
box-shadow: rgba(0, 0, 0, 0.199219) 1px 2px 2px 0px;
color: rgb(46, 44, 42);
cursor: auto;
display: block;
float: left;
height: 45px;
list-style-type: none;
margin-right: 10px;
margin-top: 0px;
text-align: -webkit-auto;
text-decoration: none;
text-shadow:
rgba(255, 255, 255, 0.296875) 0px 1px 0px;
width: 60px;
}
<ul id="program-buttons" class="clearfix">
<li class="program-button"><img src="http://www.recsports.ufl.edu/images/uploads/KanJam_thumbnail_1.jpg" width="60" height="45" alt="Title"> <span>Intramural<br> Sports</span></li>
<li class="program-button"><img src="/images/uploads/KanJam_thumbnail_1.jpg" width="60" height="45" alt="Title"> <span>BodyWise</span></li>
<li class="program-button"><img src="/images/uploads/KanJam_thumbnail_1.jpg" width="60" height="45" alt="Title"> <span>UConn<br> Outdoors</span></li>
<li class="program-button"><img src="/images/uploads/KanJam_thumbnail_1.jpg" width="60" height="45" alt="Title"> <span>Drop-In<br> Rec</span></li>
</ul>

Answer 1

The issue is that your li tags have 10px padding. Move that padding to the a tags instead.
Edit: And remove the fixed heights.

Answer 2

actually I think you misunderstand what display:block does. Your li items will never be clickable, that is not their purpose. You need to style the a elements so that they take up all the space that your li elements do now.
The simple solution is to just remove the "program-button" class from the li elements, and apply to the a elements. That will do all the styling directly on the link, no further changes needed (checked on Chrome on your site)

Answer 3

I suggest that you add width:100% and height:100% to your href.
li.program-button a {
... etc ...
display: block;
width: 100%;
height: 100%;
}
If you want the entire button area to be clickable, consider moving the padding from your LIs to your href.
li.program-button {
... etc ...
width: 228px;
height: 65px;
padding: 0px;
}
li.program-button a {
... etc ...
display: block;
width: 100%;
height: 100%;
padding: 10px;
}