.wp_themeSkin span.qiniu_custom{background-image:url('/wp-content/plugins/qiniu-uploader/tinymce/qiniu.png')!important;}
.wp_themeSkin span.qiniu_custom{background-position:0px -20px}
.wp_themeSkin .qiniu_custom:hover span.qiniu_custom {background-position:0px 0px}