.wrap { max-width: 680px; margin: 2rem auto; font: 16px/1.5 system-ui, Arial, sans-serif; }
.row { display:flex; gap:.5rem; margin: 1rem 0; }
#userInput { flex:1; padding:.5rem; }
#sendBtn { padding:.5rem 1rem; cursor:pointer; }
.log { border:1px solid #ddd; padding: .75rem; min-height: 120px; background:#fafafa; }
.log div { margin:.35rem 0; }