.ris-responsive-image img {
    max-width: 100%;
    height: auto;
    display: block;
}

.ris-block-editor .ris-image-group {
    margin-bottom: 16px;
}

.ris-block-editor .ris-preview-wrapper img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
}