/*  popper content */
/* structure: <span class="popper-item"><div class="popper-title"></div><div class="popper-content></div>  */
/* open popup on click */
.popper-item {
    display: inline-block;
    position: relative;
    cursor: pointer;
}
.popper-content {
    display: none;
    position: absolute;
    bottom: 100%;
    margin-bottom: 12px!important;
    left: 10px;
    right: 10px;
    /* max-width: 400px; */
    background-color: rgba(0,0,0,0.8);
    border-radius: 10px;
    color: #fff;
    padding: 8px;
    text-align: center;
    font-weight: normal;
    z-index: 99;
    font-size: 12px;
    cursor: pointer;
}
.popper-content:after {
    top: 100%;
    left: 50%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
    border-color: transparent;
    border-top-color: rgba(0,0,0,0.8);
    border-width: 12px;
    margin-left: -12px;
}
.popper-title:hover ~ .popper-content {
    display:block
}
@media (max-width:575px) {
    .popper-content {
        left: 10px;
    }
    .popper-content:after {
        left: 50%
    }
}