body, html {
  height: 100%;
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: url('images/background.jpg') no-repeat center center fixed;
  background-size: cover;
  color: #f1f1f1;
}

.overlay {
  background-color: rgba(0, 0, 0, 0.75);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.container {
  max-width: 700px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: #38bdf8;
}

.subtitle {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  font-weight: 300;
}

.about h2 {
  margin-top: 2rem;
  font-size: 1.5rem;
}

a {
  color: #60a5fa;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.contact {
  margin-top: 2rem;
  font-size: 0.95rem;
}