*,
*:after,
*:before {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

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

audio,
canvas,
iframe,
img,
svg,
video {
  vertical-align: middle;
}


ul, li {
  margin: 0;
  padding: 0;
  list-style: none;
}