*{ margin:0; padding:0; box-sizing:border-box; font-family:Arial, Helvetica, sans-serif; } body{ background:#f4f7fb; display:flex; justify-content:center; align-items:center; min-height:100vh; padding:20px; } .container{ background:#fff; max-width:500px; width:100%; padding:40px 30px; text-align:center; border-radius:15px; box-shadow:0 10px 30px rgba(0,0,0,0.1); } .icon{ width:90px; height:90px; background:#28a745; color:#fff; border-radius:50%; margin:0 auto 20px; display:flex; justify-content:center; align-items:center; font-size:45px; font-weight:bold; } h1{ color:#222; margin-bottom:15px; font-size:32px; } p{ color:#666; font-size:17px; line-height:1.7; margin-bottom:30px; } a{ display:inline-block; background:#007bff; color:#fff; text-decoration:none; padding:14px 28px; border-radius:8px; font-size:16px; transition:.3s; } a:hover{ background:#0056b3; }