.green {
    color: green;
}
.orange {
    color: Orange;
}
.red {
    color: Tomato;
}
.black {
    color: black;
}
.gray {
    color: gray;
}

#example_filter {
    float: left;
}
#example_length {
    float: right;
}
.tooltip {
    position: relative;
    display: inline-block;
    border-bottom: 1px dotted black;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 150px;
    background-color: black;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px 0;

    /* Position the tooltip */
    position: absolute;
    z-index: 1;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
}