Hi Greg,
That page is unfortunately not considered part of the calendar, which is why the calendar stylesheet isn’t loading and allowing you to use the calendar button class.
You can add a button style to your theme’s stylesheet and use it if you’d like, but the calendar one itself cannot be used. So, for example:
.my-button-class {
background-color: #21759b;
background-image: none;
border: 0;
-webkit-border-radius: 3px;
border-radius: 3px;
-webkit-box-shadow: none;
box-shadow: none;
color: #fff;
cursor: pointer;
display: inline-block;
font-size: 11px;
font-weight: 700;
letter-spacing: 1px;
line-height: normal;
padding: 6px 9px;
text-align: center;
text-decoration: none;
text-transform: uppercase;
vertical-align: middle;
zoom: 1;
}
…then call it on your link:
<a class="my-button-class" href="#">My Button!</a>
Cheers!
Geoff