body {
  --color: #00ffff;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;

  height: 100vh;
  width: 100vw;
  margin: 0;
  padding: 0;
  background-color: var(--color);

  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
}
.typeing {
  min-height: 1em;
  font-size: 2em;
  font-weight: bold;
  border-right: 3px solid black;
}
.blink {
  animation: blink 1s infinite;
}
@keyframes blink {
  0%,
  40% {
    border-right: 3px solid black;
  }
  50%,
  90% {
    border-right: 3px solid transparent;
  }
  100% {
    border-right: 3px solid black;
  }
}
.spend {
  position: absolute;
  bottom: 1em;
  background-color: #00000077;
  padding: 0.5em;
  font-weight: bold;
}
.spend .spend-input {
  width: 2rem;

  border: none;
  outline: none;
  background-color: var(--color);
}