:root {
  font-family: Arial, Helvetica, sans-serif;
  color: #171717;
  background: #f4f4f1;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  border-top: 15px solid #171717;
  border-image: repeating-linear-gradient(135deg, #171717 0 18px, #f5c400 18px 36px) 15;
}
.page {
  min-height: calc(100vh - 15px);
  display: grid;
  place-items: center;
  padding: 40px 20px;
}
.card {
  width: min(100%, 600px);
  padding: 42px 36px 48px;
  border: 4px solid #171717;
  background: #fff;
  box-shadow: 8px 8px 0 #171717;
  text-align: center;
}
.sign {
  width: 120px;
  height: 120px;
  display: grid;
  place-items: center;
  margin: 0 auto 24px;
}
.sign svg { width: 100%; height: 100%; }
h1 {
  margin: 0;
  font-size: clamp(25px, 6vw, 38px);
  font-weight: 900;
  letter-spacing: 1px;
  line-height: 1.15;
}
.description { margin: 18px 0 0; color: #333; font-size: 17px; line-height: 1.5; }
.return-message { margin: 9px 0 0; color: #666; font-size: 14px; }
@media (max-width: 480px) {
  .card { padding: 34px 20px 38px; }
  .sign { width: 100px; height: 100px; }
}