body { margin:0; font-family:Arial, sans-serif; background:#f4f4f4; color:#222; }
header { background:#1b1b1b; color:#fff; padding:35px 15px; text-align:center; }
nav { background:#2d2d2d; text-align:center; padding:12px; }
nav a { color:white; margin:0 12px; text-decoration:none; font-size:17px; }
.container { max-width:900px; margin:30px auto; background:white; padding:30px; border-radius:8px; box-shadow:0 2px 6px rgba(0,0,0,0.1);}
.donate-big-button { background:#0a6ebd; padding:15px 30px; color:white; font-size:20px; border-radius:6px; text-decoration:none; }
footer { text-align:center; padding:20px; background:#1b1b1b; color:white; margin-top:20px; }