html, body, div, p, h1, ul, li, span, img {
  margin: 0;
  padding: 0;
  border: 0;
  box-sizing: border-box;
}

ul, li {
  list-style: none;
}

body {
  -webkit-text-size-adjust: 100%;
}

.clearfix::after {
  content: "";
  display: block;
  clear: both;
}

.fl {
  float: left;
}