*,body { margin:0; padding:0; }
body { background:#ebebeb; }
.wrapper { width:100%; height:100vh; display:flex; justify-content:center; align-items:center; }
.wrap { padding:0 20px; text-align:center; }
h1 { font-size:24px; color:#bb7a2a; }
.qr { max-width:300px; margin:20px auto; padding:20px; border-radius:10px; box-shadow:0 4px 2px rgba(0,0,0,.1); box-sizing:border-box; background:#fff; display:inline-block; vertical-align:top; }
.qr img { width:100%; display:block; }
p { font-size:18px; color:red; }