Template:Infobox buttons/styles.css

Template page
.infobox-extlink-list {
    position: absolute;
    margin-top: -45px;
    padding: 0;
    width: 450px;
    visibility: hidden;
    opacity: 0;
    z-index: -1;
    background: #33363d;
    border-radius: 0 0 12px 12px;
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.0625), 0 10px 10px rgba(0, 0, 0, 0.055);
    transition: opacity 0.2s ease, box-shadow 0.2s ease;
    text-align: left;
    overflow: hidden;
    /* Clip background icon */
}

.infobox-button:hover .infobox-extlink-list {
    opacity: 1;
    z-index: 10;
    visibility: visible;
}

.infobox-button>span {
    display: block;
    border-radius: 0 0 12px 12px;
    background: #36c;
    padding: 10px 20px;
    color: white;
}

.infobox-extlink-title {
    display: block;
	padding: 0px 20px;
    margin: -10px 0 0 0;
    font-size: 1rem;
    width: 450px;
    color: #fff;
}

.infobox-extlink-list ul {
    margin: 0 0 10px 0;
    padding: 0 10px;
    display: flex;
    flex-wrap: wrap;
    list-style: none;
}

.infobox-extlink a {
    display: block;
    /* Override external link and file icons */
    padding: 5px 10px !important;
    border-radius: 4px;
    background-image: none !important;
    transition: background 0.2s ease, color 0.2s ease;
}

.infobox-extlink a:hover {
    background-color: #2b2f36 !important;
}

.infobox-extlink a:active {
    background-color: #eaf3ff !important;
}

.infobox-extlink-title:before {
    display: block;
    position: absolute;
    width: 120px;
    height: 120px;
    margin-top: 5px;
    right: 20px;
    opacity: .1;
    z-index: -1;
    background-repeat: no-repeat;
    background-position: top right;
    background-size: contain;
    filter: invert(1);
}

.infobox-extlink-title-rsi:before {
    content: "";
    /* TemplateStyles does not like internal link for some reason */
    /* background-image: url(https://starcitizen.tools/images/4/40/RSItm.svg);*/
}


.infobox-extlink-title-community:before {
    content: "";
    /* TemplateStyles does not like internal link for some reason */
    /* background-image: url(https://starcitizen.tools/images/3/3f/MadeByTheCommunity.svg);*/
}