article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section {
    display: block;
}

html {
    font-size: 100%;
    -ms-text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
    font-family: sans-serif;
}

body {
    margin: 0;
}

a:focus {
    outline: dotted thin;
}

h1 {
    font-size: 2em;
    margin: 0.67em 0;
}

h2 {
    font-size: 1.5em;
    margin: 0.83em 0;
}

h3 {
    font-size: 1.17em;
    margin: 1em 0;
}

h4 {
    font-size: 1em;
    margin: 1.33em 0;
}

h5 {
    font-size: 0.83em;
    margin: 1.67em 0;
}

h6 {
    font-size: 0.67em;
    margin: 2.33em 0;
}

b,
strong {
    font-weight: 700;
}