Create simple tooltip html css

Preview

HTML

<span class="tooltipans" data-tooltip='All your leads will be saved to your Customers tab with a "My Sticky Elements" tag so you can easily find them'>?</span>

CSS

<style>
.tooltipans{
    position: relative;
    background: rgba(0,0,0,0.7);
    padding: 2px 7px;
    border-radius: 100%;
    font-size: 12px;
    cursor: help;
    color: #FFF;
}
.tooltipans::before, .tooltipans::after{
    position: absolute;
    left: 50%;
    opacity: 0;
    transition: allease0.3s;
}
.tooltipans::before{
    content: "";
    border-width: 10px 8px 08px;
    border-style: solid;
    border-color: rgba(0,0,0,0.3) transparent transparent transparent;
    top: -10px;
    margin-left: -8px;
}
.tooltipans::after{
    content: attr(data-tooltip);
    background: rgba(0,0,0,0.7);
    top: -10px;
    transform: translateY(-100%);
    font-size: 14px;
    margin-left: -150px;
    width: 300px;
    border-radius: 10px;
    color: #fff;
    padding: 14px;
}
.tooltipans:hover::before, .tooltipans:hover::after{
    opacity: 1;
}
</style>