.wp-block-formdesigner-block-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.wp-block-formdesigner-block-placeholder .components-placeholder__fieldset { max-width: 100%; }
.wp-block-formdesigner-block-placeholder select {
    height: 35px;
    max-width: 300px;
    margin-right: 7px;
}
.wp-block-formdesigner-block-placeholder button.components-button {
    height: 35px;
}

.wp-block-formdesigner-block-mode .wp-block-formdesigner-block {
    display: block;
}
.wp-block-formdesigner-block-mode .wp-block-formdesigner-block-placeholder {
    display: none;
}

.wp-block-formdesigner-block-mode-edit .wp-block-formdesigner-block {
    display: none;
}
.wp-block-formdesigner-block-mode-edit .wp-block-formdesigner-block-placeholder {
    display: flex;
}