.code{overflow-y:auto;background-color:#4a4f53;margin:10px auto auto;border:5px solid #fff;border-radius:15px;width:50%;height:500px;border-radius:5px;font:12px/normal Monaco,Menlo,Ubuntu Mono,Consolas,source-code-pro,monospace}.code pre{color:#f5f5f5;margin:10px}.lg-btn{width:80%}.container{display:flex;justify-content:center}