.tooltip {
    position: relative;
    display: inline-block;
    background-image: url("images/copy-to-paste.png");
    margin-left: 7px;
    top: 1px;
    cursor: pointer;
}
.tooltip > div {
    width: 12px;
    height: 14px;
}
.tooltip .tooltiptext {
    box-shadow: 0 4px 12px 0 #c2c2c2;
    font-weight: normal;
    background-color: #FFF;
    line-height: 36px;
    visibility: hidden;
    width: 140px;
    height: 36px;
    text-align: center;
    border-radius: 8px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 150%;
    left: 50%;
    margin-left: -75px;
    opacity: 0;
    transition: opacity 0.3s;
}
.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}