For some reason I can't get the hover state of this div to work for a button I created within a Wordpress page:
<div class="signupbutton" style="font-size: 28px; background-color: #5aaf20; color: white; text-align: center; font-family: 'Oswald', Arial, Helvetica; padding: 25px 50px; box-shadow: 1px 1px 5px #b7b9b5; margin: 0% 30%;">SIGN-UP</div>
<style>
div.signupbutton:hover {background-color: #80f133;}
</style>
If I replace the hover's property (i.e. to a border) it works fine. What gives?