body{margin:0;font-family:Arial,sans-serif;background:url("background.jpg") center/cover no-repeat;height:100vh;display:flex;justify-content:center;align-items:center;} .container{background:rgba(255,255,255,0.85);padding:40px;border-radius:12px;text-align:center;} h1{color:#2c3e50;} p{color:#555;}