body { font-family: Arial, sans-serif; margin: 20px; background: #f5f5f5; }
.container { max-width: 1200px; margin: auto; background: white; padding: 20px; border-radius: 8px; }
.login-box { width: 300px; margin: 100px auto; background: white; padding: 20px; border-radius: 8px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }
.nav { margin-bottom: 20px; }
.nav a { margin-right: 15px; text-decoration: none; color: #007bff; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px; text-align: left; border: 1px solid #ddd; }
button { padding: 4px 10px; cursor: pointer; }