The idea for this post came because my blog’s new theme had borders on all smileys which looked a bit odd. So I thought why not make a post about it.
Open your theme’s style.css file and add this in last line:
img.wp-smiley{
border:none;
}
That’s all. Nothing more. It will remove borders on all smileys and works with all themes in WordPress and for most versions of WordPress.