.ui-tooltip {
    background: #666;
    color: white;
    border: none;
    padding: 0;
    opacity: 1;
}
.ui-tooltip-content {
    position: relative;
    padding: 0px 5px;
}
.ui-tooltip-content::after {
    content: '';
    position: absolute;
    border-style: solid;
    display: block;
    width: 0;
}

.ui-tooltip-content::after {
    bottom: -18px;
    left: 30px;
    border-color: rgb(41, 41, 41) transparent;
    border-width: 10px 10px 0;    
}

a.highlight_tooltip_content,
a.highlight_tooltip_sidebar_mail{
    line-height: 20px;
    margin:0px 0px 0px 0px;
    padding: 0px 5px 0px 5px;
}

.highlight_tooltip_content img,
.highlight_tooltip_sidebar_mail img{
    width:25px;
}