.tooltip_container {
    position: absolute;
    visibility: hidden;
    z-index: 2;
}

.tooltip_content {
    position: relative;
    top: 5px;
    left: 5px;
    padding: 5px 10px;
    font-size: 0.9em;
    background-color: #fff;
    color: #444;
    border: 1px solid #888;
}

.tooltip_trigger:hover + .tooltip_container {
    visibility: visible;
    transition-property: visibility;
    transition-delay: 1.0s;
}