.mce-i-mce_sidebar {
    background: url(../img/sidebar.gif) no-repeat !important;
}
.mce-i-mce_headline2 {
    background: url(../img/h2.png) no-repeat !important;
}
.mce-i-mce_hrbd {
    background: url(../img/hr-basic.png) no-repeat !important;
}
.mce-i-mce_hrdld {
    background: url(../img/hr-dotted.png) no-repeat !important;
}
.mce-i-mce_twocolumn {
    background: url(../img/2-column.png) no-repeat !important;
}
.mce-i-mce_pullquotehalf {
    background: url(../img/half-pull-quote.png) no-repeat !important;
}
.mce-i-mce_questionsanswers {
    background: url(../img/qa-with-image.png) no-repeat !important;
}
.mce-i-mce_rightfloatimage {
    background: url(../img/image-right.png) no-repeat !important;
}
.mce-i-mce_leftfloatimage {
    background: url(../img/image-left.png) no-repeat !important;
}
.mce-i-mce_rightfloatimagecaption {
    background: url(../img/image-right-caption.png) no-repeat !important;
}
.mce-i-mce_leftfloatimagecaption {
    background: url(../img/image-left-caption.png) no-repeat !important;
}