#content_ls_shortcodes_button {
  background: url('ls_icon.png') center center no-repeat;
}


.mce-i-ls_shortcodes_button
{
 background: url('ls_icon.png') center center no-repeat !important;
 width:17px !important;
}
#mce_40-open .mce-caret {
  border-left: 0px solid rgba(0, 0, 0, 0);
  border-right: 0px solid rgba(0, 0, 0, 0);
  border-top: 0px solid #333333;
 
}