*, ::before, ::after { box-sizing: border-box; }
html { line-sizing: normal; }
body { margin: 0; }
h1 { font-size: 2rem; margin: 0.67em 0; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.17rem; }
h4 { font-size: 1.00rem; }
h5 { font-size: 0.83rem; }
h6 { font-size: 0.67rem; }
pre { white-space: pre-wrap; }
hr { border-style: solid; border-width: 1px 0 0; color: inherit; height: 0; overflow: visible; }
img, svg, video, canvas, audio, iframe, embed, object { display: block; vertical-align: middle; max-width: 100%; }
img, svg, video, canvas { height: auto; }
audio { width: 100%; }
img { border-style: none; }
svg { overflow: hidden; }
article, aside, figcaption, figure, footer, header, hgroup, main, nav, section { display: block; }
[type='checkbox'], [type='radio'] { box-sizing: border-box; padding: 0; }