body {
  font-family: sans-serif;
  background: #f4f4f4;
}
.chat-container {
  width: 100%;
  max-width: 600px;
  margin: 20px auto;
  background: white;
  padding: 15px;
  border-radius: 8px;
}
#chat-box {
  height: 400px;
  overflow-y: scroll;
  border: 1px solid #ccc;
  padding: 10px;
  margin-bottom: 10px;
  background: #fafafa;
}
.chat-img {
  max-width: 200px;
  max-height: 200px;
  margin-top: 5px;
}
form {
  display: flex;
  gap: 10px;
}
input[type=text] {
  flex: 1;
  padding: 8px;
}