Question : Button CSS formatting

please go to http://pickyourquote.com/

halfway down the page there is a "Create Account" button which is created using the following:
<div class="clearfix button-link"><a href="http://pickyourquote.com/signup" class="big-button"><span>Create Account</span></a></div>

now this looks fine on all browsers.

When you go to http://pickyourquote.com/jobs/new however, there is a button link down the bottom which does not look right in Firefox or Safari, the font looks a bit weird compared to the "Create Account" button and also there is a weird white spacing.
Code for the button is: <div class="clearfix button-link"><button class="big-button" type="submit"><span>Continue</span></button>

CSS code is attached

How do I get the <button> to look exactly the same as the <a>?

         
           
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          a.big-button, button.big-button {
background-position: right -30px;
color:#FFF;
float:left;
font-size:14px;
height:34px;
font-weight:700;
margin-right:6px;
padding:0 13px 0 0;
text-decoration:none;
}

a.big-button span, button.big-button span {
float:left;
background-position: left -30px;
line-height:14px;
padding:10px 0 10px 13px;
}

button.big-button, button.big-button span  {
border: 0;
cursor: pointer;
float: right;
}

a.big-button:hover, button.big-button:hover{
background-position: right -64px;
}

a.big-button:hover span, button.big-button:hover span {
background-position: left -64px;
}

           
         

Answer : Button CSS formatting

The user that logs need to be a powe-user. If you dont want to do this you can create a configuration with the
Internet Explorer Administration kit, have in mind that this must be configured by browser version (IE7 or IE8)

you can download here:

IEAK 7 (Internet Explorer 7)
http://www.microsoft.com/downloads/details.aspx?familyid=36b932c2-a356-4ae5-8c09-1bac9f7a4fe9&displaylang=en

IEAK 8 (Internet Explorer 8)
http://www.microsoft.com/downloads/details.aspx?FamilyID=EB407001-7F6E-4CA1-8583-E91E69E872DD&displaylang=en&displaylang=en

I hope it helps.