body {
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  padding: 40px;
  background: #f5f5f5;
}
.chat-container {
  width: 100%;
  max-width: 500px;
  background: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
#chat-box {
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 12px;
}
.user, .jennifer {
  margin-bottom: 8px;
}
input[type="text"] {
  width: 70%;
  padding: 8px;
  margin-right: 5px;
}
button {
  padding: 8px 12px;
  background: #2ecc71;
  border: none;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}