body {
  background-image: url("bg.png");
  background-color: #13b1ac;
}

.header {
  background-image: url("header.jpg");
  border-radius: 15px;
  width: 1000px;
  height: 250px;
  margin-right: auto;
  margin-left: auto;
}

.textarea {
  margin-top: 20px;
  margin-right: auto;
  margin-left: auto;
  max-width: 960px;
  background-color: #f0f0f0;
  opacity: 0.85;
  border-radius: 15px;
  padding: 20px;
  font-family: Arial, sans-serif;
  font-size: 24px;
  line-height: 1.6;
  text-align: center;
}