body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
div,
ul,
li,
img,
header,
nav,
footer,
section,
dl,
dt,
dd {
  margin: 0;
  padding: 0;
}
ul,
li {
  list-style: none;
}
a {
  text-decoration: none;
}
.lt {
  float: left;
}
.gt {
  float: right;
}
.o_hidden {
  overflow: hidden;
}
img {
  border: none;
}
html {
  font-family: 'PingFang-SC-Regular';
}