Changed around line 1
+ body {
+ font-family: 'Arial', sans-serif;
+ margin: 0;
+ padding: 0;
+ background-color: #f4f4f9;
+ color: #333;
+ }
+
+ header {
+ background-color: #4CAF50;
+ color: white;
+ padding: 2rem;
+ text-align: center;
+ }
+
+ header h1 {
+ margin: 0;
+ font-size: 2.5rem;
+ }
+
+ header p {
+ font-size: 1.2rem;
+ }
+
+ main {
+ padding: 2rem;
+ }
+
+ h2 {
+ color: #4CAF50;
+ margin-bottom: 1.5rem;
+ }
+
+ .test-grid, .guide-grid {
+ display: grid;
+ grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+ gap: 1.5rem;
+ }
+
+ .test-card, .guide-card {
+ background-color: white;
+ padding: 1.5rem;
+ border-radius: 8px;
+ box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+ transition: transform 0.3s ease, box-shadow 0.3s ease;
+ }
+
+ .test-card:hover, .guide-card:hover {
+ transform: translateY(-5px);
+ box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
+ }
+
+ .test-card h3, .guide-card h3 {
+ margin-top: 0;
+ color: #4CAF50;
+ }
+
+ .test-card p, .guide-card p {
+ font-size: 1rem;
+ color: #666;
+ }
+
+ footer {
+ background-color: #333;
+ color: white;
+ text-align: center;
+ padding: 1rem;
+ margin-top: 2rem;
+ }
+
+ @media (max-width: 768px) {
+ header h1 {
+ font-size: 2rem;
+ }
+
+ header p {
+ font-size: 1rem;
+ }
+
+ .test-grid, .guide-grid {
+ grid-template-columns: 1fr;
+ }
+ }