Opera 10 - strange yellow border of input

Hi
I have a luck for browser's bugs recently...
I have an input tag with this style

#user-login-form input {
       width:109px;
       height:22px;
       background:url("images/login-input.png"); 
       border:0;
      padding:0 5px;
     }

Code (markup):

I am using background image instead of border. It works in most of browsers but there is still a border in Opera. I cannot avoid it. I tried find solution in google but I did not find nor solution neither mention of this bug or situation. I use dragonfly (webdesigner's tool in opera) and there, when I look in Copmuted style, is border set to 0,too.



Can anybody help me?
thanks Tomas

 

Could you post or pm me a link to the page you're working on?

 

A link to the site and the general css file would help.