body {
  font-family: Arial;
  background: #111;
  color: #fff;
  display: flex;
  justify-content: center;
}

.container {
  width: 400px;
  margin-top: 50px;
}

textarea {
  width: 100%;
  height: 80px;
  margin-bottom: 10px;
  background: #222;
  color: #fff;
  border: none;
  padding: 10px;
}

button {
  width: 100%;
  padding: 10px;
  background: red;
  color: white;
  border: none;
  cursor: pointer;
}

input {
  width: 100%;
  padding: 10px;
  background: #222;
  color: #0f0;
}