body,
div,
h1,
h2,
h3,
h4,
h5,
h6,
html,
p,
pre {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a,
body,
button,
dd,
div,
dl,
dt,
form,
input,
li,
ol,
p,
td,
th,
ul {
    font-family: "微软雅黑", arial, helvetica;
}

ul {
    list-style-type: none;
}

a {
    text-decoration: none;
}
#downloadbtns {
  width: 100%;
  height: 2.34666667rem;
  position: fixed;
  top: 0;
  border: 0;
  z-index: 99;
}