body {
    margin: 0;
    font-size: 14px;
}

html,
body,
h1,
h2,
h3,
h4,
h5,
a,
p,
span,
button {
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft Yahei", "Wenquanyi Micro Hei", sans-serif;
    font-weight: 300;
}
table,
td,
tr,
ul,
ol,
li,
dl,
dd,
dt,
p,
input,
form,
em,
p,
img,
h1,
h2,
h3,
h4,
h5 {
    margin: 0px;
    padding: 0px;
}