qwc2/plugins/style/Reports.css

QGIS Web Client

div.reports-body {
    padding: 0.25em;
}

div.reports-body > div:not(:last-child) {
    margin-bottom: 0.25em;
}

div.reports-body div.reports-filter-combo {
    width: 100%;
}

div.reports-body button.reports-download-button {
    width: 100%;
}