html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
    display: block;
}
body {
    line-height: 1;
}
ol,
ul {
    list-style: none;
}
blockquote,
q {
    quotes: none;
}
blockquote:before,
blockquote:after,
q:before,
q:after {
    content: '';
    content: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}

html,
body {
    zoom: 100%;
    height: 100%;
    font-family: 'Avenir', Helvetica, Arial, sans-serif;
    /*字体抗锯齿,使用后字体看起来会更清晰舒服*/
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: #fff;
    color: #606266;
    font-size: 14px;
    min-width: 1200px;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    padding: 0;
    font-size: 16px;
    font-weight: normal;
}
ul,
ol {
    list-style: none;
    margin: 0;
    padding: 0;
}
img {
    vertical-align: top;
}
button,
input {
    outline: none;
    border: none;
}

a {
    color: #333333;
}

.clear:after {
    content: '';
    display: block;
    clear: both;
}

.spacing section {
    margin: 0 27.5px;
}

a,a:hover {
    text-decoration: none;
}

#back-to-top {
    display: block;
    z-index: 500;
    width: 40px;
    height: 40px;
    line-height: 35px;
    text-align: center;
    font-size: 20px;
    position: fixed;
    bottom: -40px;
    right: 20px;
    background-color: #25272a;
    text-decoration: none;
    border-radius: 5px;
}

#back-to-top, #back-to-top i {
    transition: all 1s ease;
}

#back-to-top.show {
    bottom: 20px;
}

#back-to-top:hover {
    background-color: #1dcfd1;
}

#back-to-top a {
    width: 40px;
    height: 40px;
    display: block;
    color: #c2cbcd;
    transition: all .1s ease-in-out;
    outline: none;
}

#back-to-top:hover a {
    color: #ffffff;
}