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

header {
  background: #111;
  color: #fff;
  padding: 20px;
  text-align: center;
}

footer {
  background: #f2f2f2;
  padding: 15px;
  text-align: center;
  font-size: 14px;
}

h2 {
  margin-top: 30px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 15px;
  margin-top: 15px;
}

.tool-card {
  display: block;
  padding: 15px;
  background: #fff;
  border-radius: 8px;
  text-decoration: none;
  color: #000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  text-align: center;
}

.tool-card:hover {
  transform: translateY(-3px);
}