html {
  box-sizing: border-box;
  font-size: 20px;
}
body {
  height: 100vh;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}
body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ol,
ul {
  margin: 0;
  padding: 0;
  font-weight: normal;
}
ol,
ul {
  list-style: none;
}
img {
  max-width: 100%;
  height: auto;
}