body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #0d1117;
  color: #c9d1d9;
}

header {
  text-align: center;
  padding: 40px;
  background: #161b22;
}

h1 {
  margin: 0;
  font-size: 32px;
}

h2 {
  color: #58a6ff;
  margin-top: 40px;
}

.subtitle {
  color: #8b949e;
  margin-top: 10px;
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 20px;
}

.card {
  background: #161b22;
  padding: 20px;
  margin-top: 20px;
  border-radius: 10px;
}

ul {
  padding-left: 20px;
}

a {
  color: #58a6ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  color: #8b949e;
}

footer img {
    width: 40px;
    height: 40px;
}

footer {
     display: flex;
     justify-content: center;
}

footer a {
    margin: 20px;
    text-align: center;
}

footer p {
    margin-top: 2px;
}

header img {
    width: 180px;
    height: 180px;
    border-radius: 70%;
    border: 5px solid rgba(0, 174, 255, 0.76);
}