qwc2/plugins/style/FeatureForm.css

QGIS Web Client

div.feature-query-body {
    display: flex;
    flex-direction: column;
    height: 100%;
}

div.feature-query-body div.feature-query-selection {
    flex: 0 0 auto;
    padding-bottom: 0.25em;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.25em;
}

div.feature-query-body div.feature-query-selection > select {
    width: 100%;
}

div.feature-query-body div.AttributeForm {
    flex: 1 1 auto;
    overflow: auto;
}