* {
  margin: center;
  padding: center;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

    .header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #1e90ff;
  color: white;
  padding: 20px;
}

    .header a {
  color: white;
  margin-left: 15px;
  text-decoration: none;
}

    .container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  padding: 20px;
}

    .box {
  background: #f0f0f0;
  padding: 40px;
  text-align: center;
  border: 2px solid #ccc;
}

.btn-container {
  text-align: center;
  margin: 20px;
}

#btn {
  padding: 10px 20px;
  background: #28a745;
  color: white;
  border: none;
  cursor: pointer;
  transition: transform 0.3s, background 0.3s;
}

    #btn:hover {
  transform: scale(1.1);
  background: #218838;
}

    .footer {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #333;
  color: white;
  padding: 15px;
}

 

:root {
  --primary: #2563eb;
  --accent: #22c55e;
  --bg: #f9fafb;
  --text: #111827;

}
body {
  font-family: 'Segoe UI', sans-serif;
  color: var(--text);
  line-height: 1.6;
}

section {
  padding: 40px 20px;
}

    .grid-container {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.header {
  background: white;
  color: black;
  border-bottom: 1px solid #eee;
}

    @media (max-width: 768px) {
  .grid-container {
    grid-template-columns: 1fr;
  }
}