body {
  margin: 0;
  background: #020617;
  font-family: system-ui;
  color: white;
}
.app {
  padding: 20px;
  max-width: 420px;
  margin: auto;
}
h2 {
  text-align: center;
  color: #38bdf8;
}
input {
  width: 100%;
  margin: 15px 0;
}
button {
  width: 100%;
  padding: 14px;
  background: #22c55e;
  border: none;
  border-radius: 10px;
  font-size: 17px;
  font-weight: bold;
}
#output {
  margin-top: 20px;
  text-align: center;
}
img {
  width: 100%;
  border-radius: 10px;
  margin-top: 10px;
}