html,
body,
ul,
li,
ol,
dl,
dd,
dt,
p,
h1,
h2,
h3,
h4,
h5,
h6,
nav,
header,
form,
fieldset,
legend,
img,
div,
span,
section,
footer,
em,
input,
textarea,
a {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

fieldset,
img,
input,
button,
textarea {
    border: none;
    padding: 0;
    margin: 0;
    outline-style: none;
}

ul,
ol {
    list-style: none;
}

input,
textarea {
    padding-top: 0;
    padding-bottom: 0;
}

select,
input {
    vertical-align: middle;
}

select,
input,
textarea {
    margin: 0;
}

textarea {
    resize: none;
}

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

table {
    border-collapse: collapse;
}

body {
    font-size: 16px;
    font-family: Microsoft YaHei;
    color: #666;
    background: #fff
}

.clearfix:before,
.clearfix:after {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}

a {
    text-decoration: none;
    transition: All 0.5s ease;
    -webkit-transition: All 0.5s ease;
    -moz-transition: All 0.5s ease;
    -o-transition: All 0.5s ease;
    outline: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    text-decoration: none;
    font-weight: normal;
}

s,
i,
em {
    font-style: normal;
    text-decoration: none;
}