*,*::before,*::after {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style: none;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  outline: none;
  box-shadow: none;
}

a {
  text-decoration: none;
  color: inherit;
}

body > header, body > footer, body > main {
  display: flex;
  flex-direction: row;
}

body > main {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 0;
  flex: 1;
}

body > header > *, body > footer > *, body > main > * {
  flex: 1;
}