* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #0d0f14;
  color: antiquewhite;
  position: relative;
  margin: 0 auto;
  overflow: hidden;
}

#result.success {
  padding: 8px 10px;
  margin: 18px 0;
  border: 1px solid green;
  color: rgb(4, 236, 4);
}
#result.failed {
  padding: 8px 10px;
  border: 1px solid rgb(130, 5, 5);
  color: red;
}
.box {
  --mask: radial-gradient(34.99px at 50% 48px, #000 99%, #0000 101%)
      calc(50% - 60px) 0/120px 100%,
    radial-gradient(34.99px at 50% -18px, #0000 99%, #000 101%) 50% 30px/120px
      100% repeat-x;
  -webkit-mask: var(--mask);
  mask: var(--mask);
}