div,
form,
img,
ul,
ol,
li,
dl,
dt,
dd,
p,
table,
tr,
th,
td,
tbody,
input,
body,
strong,
span,
pre {
    margin: 0;
    padding: 0;
    border: 0;
}
input{
    background: none;
    outline: none;
}
input::placeholder{
    font-size: 16px;
    color: #a1a1a1;
}
select{
    outline: none;
}
h1,
h2,
h3,
h4,
h5,
h6,
p {
    margin: 0;
    padding: 0;
    font-weight: normal;
}

*{
    box-sizing: border-box;
}
body {
    width: 100%;
    font-family: "Microsoft YaHei";
    font-size: 14px;
    margin: 0 auto;
    color: #000;
    height: auto;
    overflow-x: hidden;
}

img {
    border: 0px;
    vertical-align: middle;
}

ul,
li {
    list-style: none;
}

a {
    text-decoration: none;
    color: #000000;
}

.clear {
    clear: both;
    overflow: hidden;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.mt20 {
    margin-top: 20px;
}
.mt40{
    margin-top: 40px;
}