* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
html {
  font-size: 16px;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(310deg, #d6e1f0, #d5e0ef) 
}
.parent {
  padding: 10px;
  border-radius: 12px;
  background-color: #f5f5f5;
  width: 340px;
  position: relative;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
.qr-container {
  position: relative;
  background-color: #2b7efa;
  border-radius: 8px;
  height: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}
.qr-img {
  width: 75%;
  z-index: 999;
}
.content {
  text-align: center;
  padding: 12px 8px;
  font-family: sans-serif;
}
.content h1 {
  padding-bottom: 12px;
  color: #222;
  line-height: 2.3rem;
  font-size: 1.6rem;
}
.content p {
  font-size: 1.1rem;
  color: #999;
  letter-spacing: 0.8px;
}
.circle {
  position: absolute;
  border-radius: 50%;
  background: #3785ff;
  
}
.circle.top {
  left: -62px;
  top: -62px;
  width: 72%;
  height: 72%;
  transform: rotate(320deg);
}
.circle.bottom {
  bottom: -48px;
  right: -48px;
  width: 52%;
  height: 52%;
  transform: rotate(-60deg);
}
@media (min-width: 1440px) {
  html {
    font-size: 17px;
  }
  .qr-container {
    height: 330px;
  } 
  .content h1 {
    font-size: 1.5rem;
  }
}

@media (max-width: 780px) {
  html {
    font-size: 14px;
  }
  .parent {
    width: 310px;
  }
  .qr-img {
    width: 82%;
  }
}
@media (max-width: 610px) {
  html {
    font-size: 13px;
  }
  .parent {
    width: 280px;
  }
  .qr-img {
    width: 85%;
  }
}
@media (max-width: 320px) {
  html {
    font-size: 12px;
  }
  .parent {
    width: 95%;
  }
  .qr-container {
    height: 250px;
  } 
  .content {
    padding: 12px 0;
  }
}
@media (max-width: 250px) {
  html {
    font-size: 11px;
  }
}