@chemistry/mol3dview/src/mol3dview.css

Crystal Structure Viewer

.jcmolview-dropdown-menu {
    top: 100%;
    left: 0;
    z-index: 1000;
    display: none;
    float: left;
    min-width: 10rem;
    padding: .5rem 0;
    margin: .125rem 0 0;
    font-size: 1rem;
    color: #292b2c;
    text-align: left;
    list-style: none;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0,0,0,.15);
    border-radius: .25rem;
}

.jcmolview-dropdown-item {
    box-sizing: border-box;
    display: block;
    text-decoration: none;
    width: 100%;
    padding: 3px 1.5rem 3px 1rem;
    clear: both;
    font-weight: 400;
    color: #292b2c;
    text-align: inherit;
    white-space: nowrap;
    background: 0 0;
    border: 0;
}

.jcmolview-dropdown-item:hover, .jcmolview-dropdown-item:focus {
    color: #1d1e1f;
    text-decoration: none;
    background-color: #f7f7f9;
}

.jcmolview-dropdown-divider {
    height: 1px;
    margin: .5rem 0;
    overflow: hidden;
    background-color: #eceeef;
}