:root {
  --color-lightest: #f9fdfe;
  --color-gray-light: #cdcfcf;
  --color-gray-medium: #686a69;
  --color-gray-dark: #414643;
  --color-darkest: #2a2f2c;
}

*,
::before,
::after {
  margin: .5rem;
  box-sizing: border-box;
}


html, body {
  margin: .5rem;
  padding: 3rem;
  background-color: var(--color-gray-medium);
}
canvas {
  display: block;
}

body {
  background: var(--color-lightest);
  color: var(--color-gray-medium);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-size: 18px;
  line-height: 1.2;
  max-width: 900px;
  margin: auto;
}

h1,
h2 {
  color: var(--color-darkest);
  font-size: 110%;
  line-height: 1.2;
  margin-top: 2rem;
}

h1 {
  font-size: 125%;
}

.footer{
  display: flex;
  margin-top: 1rem;
  margin-bottom: 2rem;
  padding: .5rem;
  border: solid 1px;
  justify-content: center;
}

button {
  display: block;
  margin: 2rem;
  padding: 0 1rem 0.125rem;
  background-color: var(--color-gray-medium);
  border: 0;
  color: var(--color-lightest);
  font-family: lato, sans-serif;
  font-size: 100%;
  letter-spacing: 0.05em;
  line-height: 1.5;
  text-transform: uppercase;
  transition: 150ms all linear;
}

button:hover,
button:active,
button:focus {
  background: var(--color-darkest);
  cursor: pointer;
}