.masterstudy-nav-button.blocked-processed{transition:opacity .3s!important}#back-button-tooltip{position:absolute;background:#f44;color:white;padding:5px 10px;border-radius:4px;font-size:12px;z-index:99999;display:none;text-align:center;width:120px;transform:translateX(-50%)}#back-button-tooltip:after{content:"";position:absolute;top:100%;left:50%;margin-left:-5px;border-width:5px;border-style:solid;border-color:#f44 transparent transparent transparent}