:root {
  --outer-margin: 1.5rem;

  /* https://systemfontstack.com/ */

  --system-sans: -apple-system, BlinkMacSystemFont, avenir next, avenir, segoe ui, helvetica neue, helvetica, Cantarell, Ubuntu, roboto, noto, arial, sans-serif;
  --system-serif: Iowan Old Style, Apple Garamond, Baskerville, Times New Roman, Droid Serif, Times, Source Serif Pro, serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol;
}

html {
  font-size: 20px;
  font-family: var(--system-sans);
}

body {
  margin: var(--outer-margin);
  background-color: #323232;
  color: #c0c0c0;

  display: flex;
  flex-flow: column nowrap;
  min-height: calc(100vh - 2 * var(--outer-margin));

  main {
    flex-grow: 1;
  }
}

a {
  color: white;
}