* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Open Sans', sans-serif;
  background-color: #1e1e1e;
  color: #f0f0f0;
  line-height: 1.6;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

header img {
  width: 80px;
  height: auto;
  border-radius: 12px;
}

header h1 {
  font-size: 2rem;
  margin-top: 10px;
}

header nav {
  margin-top: 15px;
}

header nav a {
  color: #00bcd4;
  text-decoration: none;
  margin: 0 10px;
}

a.logo {
  display: inline-block;
  margin-bottom: 15px;
  color: #00bcd4;
  text-decoration: none;
}

main {
  max-width: 700px;
  margin: auto;
  background: #2c2c2c;
  padding: 20px;
  border-radius: 8px;
}

main h2 {
  margin-top: 20px;
  color: #ffc107;
}

footer {
  text-align: center;
  margin-top: 40px;
  font-size: 0.9em;
  color: #777;
}