contao-leaflet-geocode-widget/src/Resources/public/css/backend.css

.wizard_2 {
    width: 325px;
    display: inline-block;
}

.leaflet-geocode-map {
    width: 100%;
    height: 50vh;
    min-height: 400px
}

.leaflet-submit-btn {
    margin-top: 10px;
    display: block;
    padding: 7px 12px;
    border: 1px solid #aaa;
    border-radius: 2px;
    box-sizing: border-box;
    cursor: pointer;
    background: #eee;
    transition: background .2s ease;
}