:root {
  --colour-white: #ffffff;
  --colour-primary: #c3c3c3;
  --colour-secondary: #1d1d1b;
}

* {
  box-sizing: border-box;
}

@font-face {
  font-family: "Montserrat Regular";
  src: url('../fonts/Montserrat-Regular.ttf');
  font-weight: normal;
  font-style: normal;
}

html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  color: var(--colour-white);
  background-color: var(--colour-secondary);
  font-family: "Montserrat Regular", system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

header {
  text-align: right;
  padding: 1em;
}

main {
  height: calc(100vh - 5em);
  display: grid;
  place-content: center;
  text-align: center;
  margin-inline: 2em;
}

p {
  font-size: min(max(1em, 3vw), 2.2em);
  margin-block: 0;
  margin-bottom: 0.5em;
}

input,
button {
  line-height: 1em;
  padding: 1em;
  margin-left: 1em;
  appearance: none;
  border: 1px solid var(--colour-primary);
  background-color: var(--colour-secondary);
  color: var(--colour-primary);
}

img {
  display: block;
  margin-inline: auto;
  margin-bottom: 1em;
  width: 1000px;
  max-width: 100%;
}