Chrome's default focus on upload button

I use ckfinder in my application . When we click on image plugin , it opens image plugin with 'Image info ' as default tab with focus on URL input tab . I have changed this and made my default tab as 'upload ' . However for the very first time I get chrome's default focus around choose file button in upload tab which looks quite ugly . I have tried to remove it using
*:focus
{
outline: none;
} in my css class , but that dint work . Can someone suggest me few more methods to remove it .