IE Showing black border outline on submit button - css

Question

I am trying to understand why IE 7>10 is showing a black border on a submit button. In order to clear it, I have to click inside the fieldset and then it goes away. But comes back when I click send or cancel. Is this a common problem with IE? I have included screenshot. Thanks!
css code
.submit
{
margin:-50px 0 0 -148px;
background-color:#eee;
height:40px;
width:120px;
padding:0;
border:1px solid #666;
color:#42A0FF;
}
.cancel
{
margin: -51px 0 0 -20px;
background-color:#eee;
height:40px;
width:120px;
padding:0;
border:1px solid #666;
color:#42A0FF;
}
fieldset
{
background:#f2f2e6;
border-color:#cccccc #cccccc #cccccc #cccccc;
margin:10px 0 46px -150px;
width:404px;
display:block;
text-height:10px;
padding-bottom:15px;
}

Answer 1

Try resetting the main input
input {border:0; margin:0;padding:0;}
And add a span to give the span the border you want so it will work universally:
.input-shell {border: #ccc 1px solid}
<span class="input-shell"><input button /></span>....
Heres a JSFIDDLE:
http://jsfiddle.net/Riskbreaker/tqnhg/1/
Heres a ref of same thing:
Any way to remove IEs black border around submit button in active forms?
Finally do this:
input[type=submit],
input[type=reset],
input[type=button]
{
filter:chroma(color=#000000);
color:#cccccc;
}