/* Reset default spacing */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Make body take full viewport height */
body {
  height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
}

/* Center content */
main {
  height: 100%;
  display: flex;
  justify-content: center; /* horizontal */
  align-items: center;     /* vertical */
  text-align: center;
  padding: 20px;
}

/* Responsive text */
h1 {
  font-weight: normal;
  font-size: clamp(1.5rem, 4vw, 3rem);
}