:root { color: #173d28; background: #f8d640; font-family: Arial, Helvetica, sans-serif; }
* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow: hidden;
  background: #f8d640;
}

main {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  isolation: isolate;
}

.card {
  width: min(100%, 640px);
  padding: clamp(2rem, 7vw, 4.5rem);
  position: relative;
  z-index: 1;
  background: #f6f2df;
  border: .38rem solid #173d28;
  border-radius: 2.2rem;
  box-shadow: .75rem .75rem 0 #e94b3c;
  transform: rotate(-2deg);
}

.label, .footer {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.label { margin: 0 0 1.3rem; color: #e94b3c; }

h1 {
  margin: 0;
  color: #173d28;
  font-size: clamp(3rem, 9vw, 6.5rem);
  font-weight: 900;
  letter-spacing: -.075em;
  line-height: .83;
  text-transform: uppercase;
}

h1 em { color: #e94b3c; font-style: normal; }

.message {
  max-width: 25rem;
  margin: 2rem 0 0;
  font-size: clamp(.92rem, 2vw, 1.1rem);
  font-weight: 700;
  line-height: 1.4;
}

.footer { position: absolute; bottom: 1.5rem; margin: 0; }

.sun {
  position: absolute;
  top: -9rem;
  right: -7rem;
  width: 22rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #e94b3c;
  z-index: -1;
}

.squiggle {
  position: absolute;
  z-index: -1;
  color: #173d28;
  font-family: Georgia, serif;
  font-size: clamp(8rem, 21vw, 16rem);
  font-weight: bold;
  line-height: .5;
}
.squiggle-one { bottom: 8%; left: -2%; transform: rotate(35deg); }
.squiggle-two { top: 22%; right: 4%; color: #f6f2df; transform: rotate(-50deg); }

@media (max-width: 520px) {
  .card { border-width: .28rem; border-radius: 1.4rem; box-shadow: .45rem .45rem 0 #e94b3c; }
  .squiggle-two { right: -15%; }
}