File: public/assets/openlayers/ol-popup/ol-popup.min.css

.ol-popup {
    display: none;
    position: absolute;
    background-color: white;
    bottom: 12px;
    min-width: 300px;
    transform: translateX(-50%);
    border-radius: .3rem
}

.ol-popup:after, .ol-popup:before {
    top: 100%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
}

.ol-popup:after {
    border-top-color: white;
    border-width: 10px;
    left: 50%;
    margin-left: -10px;
}

.ol-popup:before {
    border-top-color: #cccccc;
    border-width: 11px;
    left: 50%;
    margin-left: -11px;
}

.ol-popup-title {
    padding: 0 1rem;
    border-bottom: 1px solid rgba(0,0,0,.1)
}

.ol-popup-content {
    width: 100%;
    padding: 1rem
}

.ol-popup-closer {
    position: absolute;
    top: .2rem;
    right: .5rem;
    text-decoration: none;
    z-index: 1
}

.ol-popup-closer:after {
    content: "\2716";
    font-size: 14px
}

.ol-popup div.infoResult {
    min-width: 130px;
}

.ol-popup div.infoResult p {
    padding: 0.1em;
    margin: 0;
}

.ol-popup-content h3 {
    margin: 0.25em 0;
}

.ol-popup.marker {
    margin-bottom: 30px;
}

@media (min-width: 320px) and (max-width: 680px)
{
    .ol-popup .mejs__container
    {
        width: 320px!important
    }
}

@media (min-width: 681px) and (max-width: 1023px)
{
    .ol-popup .mejs__container
    {
        width: 640px!important
    }
}

@media (min-width: 1024px)
{
    .ol-popup .mejs__container
    {
        width: 720px!important
    }
}