body {
  margin:0;
  font-family: Arial, sans-serif;
  background:#0b1f23;
  color:#e0f7f5;
}
header {
  padding:80px 20px;
  text-align:center;
  background:linear-gradient(135deg,#0b1f23,#0f3d3a);
}
.tagline {
  color:#4fd1c5;
  font-size:1.2em;
}
.btn {
  display:inline-block;
  margin-top:20px;
  padding:12px 24px;
  background:#4fd1c5;
  color:#002b2a;
  text-decoration:none;
  font-weight:bold;
}
section {
  padding:60px 20px;
  max-width:900px;
  margin:auto;
}
input, textarea {
  width:100%;
  padding:10px;
  margin:8px 0;
}
button {
  padding:10px 20px;
  background:#4fd1c5;
  border:none;
  font-weight:bold;
}
footer {
  text-align:center;
  padding:20px;
  background:#061517;
}