html, body, div, span,
main, header, footer,
h1, h2, h3, h4, h5, h6,
p, a, em, i, strong, b, ul, li
img, form, label, canvas {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

html,
body {
  font-family: Arial, sans-serif;
  font-size: 10px;
  color: #f9f9f9;
  background: #111515;
  -webkit-text-size-adjust: 100%;
}

body {
  box-sizing: border-box;
  min-width: 320px;
  padding: 2rem;
  font-size: 1.8rem;
  line-height: 1.25;
  text-align: center;
}

h1 {
  font-family: "Arial Black", Arial, sans-serif;
  font-size: 5rem;
  font-weight: 900;
  line-height: 2;
}

ul {
  list-style: none;
}

a {
  display: inline-block;
  color: inherit;
}
a:hover {
  text-decoration: none;
}
a:focus {
  text-decoration: overline;
}

.main {
  max-width: 500px;
  margin: 2rem auto 0;
  padding: 2rem 0;
}

.form {
  margin: 0 -0.25rem;
  font-size: 0;
}
.form .field {
  display: inline-block;
  box-sizing: border-box;
  width: 25%;
  padding: 0.25rem;
  font-size: 1.8rem;
}
.form .label {
  display: block;
  padding-bottom: 0.25rem;
  text-align: left;
}
.form input,
.form button {
  display: inline-block;
  box-sizing: border-box;
  width: 100%; height: 5rem;
  padding: 0 2rem;
  border: 1px solid #000;
  border-radius: 0;
  font: inherit;
  text-align: center;
  vertical-align: top;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}
.form input[type="text"] {
  text-transform: uppercase;
}
.form input[type="number"] {
  padding: 0 1rem;
}
.form input[type="color"] {
  padding: 0;
}
.form input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}
.form input[type="color"]::-webkit-color-swatch {
  border: 1px solid #fff;
}
.form input[type="color"]::-moz-color-swatch {
  border: 1px solid #fff;
}
.form button {
  position: relative;
  background: #ddd;
  box-shadow: inset 0 0 1px #fff;
  transition: background-color 150ms ease-out;
}
.form button:hover {
  background: #fff;
}

.icon-download {
  display: block;
  width: 4em; height: 4em;
  position: absolute; z-index: 1;
  top: 50%; left: 50%;
  margin: -2em 0 0 -2em;
  font-size: 0.75rem;
}
.icon-download::after {
  width: 80%; height: 0.5em;
  position: absolute; z-index: 1;
  bottom: 0; left: 10%;
  background: #000;
  content: "";
}
.icon-arrow {
  display: block;
  width: 4em; height: 4em;
  position: absolute; z-index: 1;
  top: 0; left: 0;
  transform: translate3d(0, 0, 0);
  transition: transform 150ms ease-out;
}
.button-download:hover .icon-arrow {
  transform: translate3d(0, 0.25em, 0);
}
.icon-arrow::after {
  width: 0; height: 0;
  position: absolute; z-index: 1;
  top: 50%; left: 50%;
  margin-left: -1.2em;
  border: 1.2em solid transparent;
  border-top-color: #000;
  content: "";
}
.icon-arrow::before {
  width: 0.5em; height: 60%;
  position: absolute; z-index: 1;
  top: 0; left: 50%;
  margin-left: -0.25em;
  background: #000;
  content: "";
}

.canvas {
  display: block;
  width: 100%; height: 100%;
  position: relative;
  left: 50%;
  margin: 2rem auto;
  background: #000;
  transform: translate3d(-50%, 0, 0);
}

@media screen and (max-width: 480px) {
  body {
    font-size: 1.6rem;
  }
  .form .field {
    width: 50%;
    font-size: 1.6rem;
  }
  .form button,
  .form input,
  .form input[type="number"] {
    width: 100%;
  }
  .footer {
    max-width: 20rem;
    margin: 0 auto;
    line-height: 1.75;
  }
}