修改 themes/Sylvia/theme.css
.thumbnailCategory .illustration { background: transparent url(images/cat_top-left.gif) no-repeat scroll left top; padding: 0 5px 0 10px; margin: 0 !important; text-align: center; line-height:145px; } .thumbnailCategory .illustration a { display: block; margin: 0 auto; padding: 20px 4px 0; border: 0; } .thumbnailCategory .illustration a img { display: inline-block; vertical-align: middle; }