.br-preview-button-editor {
    padding: 16px;
    border: 1px dashed #949494;
}
.br-preview-button-editor > button {
    padding: 8px 16px;
    border: 1px solid #777;
    border-radius: 3px;
    background: #eee;
    color: #222;
}
.br-preview-button-editor p { margin: 8px 0 0; }
.br-preview-button-editor .description { font-size: 12px; }