html,
body,
input,
textarea {
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
}
/* 此文件不要私自修改  */
/* reset */
body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
button,
textarea,
p,
blockquote,
th,
td,
section,
article,
aside,
header,
footer,
nav,
dialog,
figure,
hgroup {
    margin: 0;
    padding: 0;
}
input,
select,
textarea {
    font-size: 100%;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}
fieldset,
img {
    border: 0;
}
caption,
th {
    text-align: left;
}
h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 100%;
    font-weight: 500;
}
ul,
ol,
li {
    list-style: none;
}
em,
i {
    font-style: normal;
}
del {
    text-decoration: line-through;
}
address,
caption,
cite,
code,
dfn,
em,
th,
var {
    font-style: normal;
    font-weight: 500;
}
img {
    border: 0;
    max-width: 100%;
}
input,
img {
    vertical-align: middle;
}
input:focus,
a:focus {
    outline: none;
}
a {
    color: #333333;
    text-decoration: none;
}
a:active {
    opacity: .7;
}
* {
    outline: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-box-sizing: border-box;
}
html {
    -webkit-text-size-adjust: none;
    overflow-y: scroll;
}
/*
  rem方式，750px 为高保真基准，原高保真大小除以基数50，即 10px/50 = 0.2rem，以此类推,字体还是 px
*/