.wp-admin .owl-button-controlled {
    position: relative;
    padding: 55px 15px 5px;
    background: #f1f1f1;
    border-radius: 20px;
    min-height: 400px;
    list-style: none;
}
.wp-admin .owl-button-controlled .block-editor-block-list__layout {
    display: flex;
    flex-wrap: wrap;
}
.wp-admin .owl-button-controlled:before {
    content: "Carousel Container";
    
    font-size: 16px;
    color: white;
    background-color: #014256;
    position: absolute;
    top: 0px;
    left: 0px;
    border-radius: 20px 20px 0px 0px;
    width: calc(100% - 20px);
    padding: 15px 0px 15px 20px;
}