html {
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
  margin: 0;
  padding: 0;
}

body {
  font-family: Tahoma, Verdana, Segoe, sans-serif;
}

h1 {
  font-size: 2rem;
  margin: 0.5rem 0 1rem 0;
}

h2 {
  font-size: 1.5rem;
  margin: 0.5rem 0 1rem 0;
}

h3 {
  font-size: 1.25rem;
  margin: 0.5rem 0 1rem 0;
}

p {
  line-height: 1.5rem;
  margin: 0.5rem 0 1rem 0;
}

ol, ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}