body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #9EBFF3;
  color: #222;
}

nav {
  background: white;
  padding: 20px;
  border-bottom: 1px solid #ddd;
  text-align: center;
}

nav a {
  margin: 0 20px;
  text-decoration: none;
  color: #222;
  font-weight: bold;
  font-size: 28px;
}

nav a:hover {
  color: #666;
}

main {
  max-width: 620px;
  margin: 140px auto;
  padding: 0 40px;
}

p {
  font-size: 24px;
  line-height: 1.8;
}

h1 {
  font-size: 32px;
  font-weight: 600;
}

@media (max-width: 768px) {
  nav {
    text-align: center;
  }

  nav a {
    display: inline-block;
    margin: 8px 12px;
    font-size: 16px;
  }

  h1 {
    font-size: 28px;
    text-align: center;
  }

  p {
    font-size: 16px;
    line-height: 1.7;
  }

  div[style*="display:flex"] {
    flex-direction: column;
    margin-left: 0 !important;
    align-items: center !important;
  }

  img {
    width: 220px !important;
    height: auto !important;
    margin-top: 0 !important;
  }
}