article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
nav,
section,
summary {
    display: block;
}

audio,
canvas,
video {
    display: inline-block;
    *display: inline;
    *zoom: 1;
}

audio:not([controls]) {
    display: none;
    height: 0;
    width: 0;
}

mark {
    background: #ff0;
    color: #333;
}


body,
dl,
dd,
ul,
ol,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
div,
textarea,
p,
blockquote {
    margin: 0;
    padding: 0;
}

button,
input,
select,
textarea {
    font-size: 100%;
    outline: none;
}

input,
button {
    overflow: visible;
    font-family: inherit;
}

textarea {
    overflow: auto;
    color: inherit;
    font: inherit;
    resize: none;

}

input::-ms-clear {
    display: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
    display: table;

}

table th,
table td {
    padding: 0;
}

li {
    list-style-type: none;
}

iframe,
img {
    border: 0;
}

iframe {
    vertical-align: top;
}


a,
a:hover,
a:link,
a:visited,
a:active {


    text-decoration: none;
}

label {
    display: inline-block;
}

.mn {

    width: 80%;
    margin: 0 auto;
}

i {
    font-style: normal;
}

b,
strong {
    font-weight: 400;
}

.l {
    float: left;
}

.r {
    float: right;
}

.c {

    clear: both;
}

.m40px {
    margin-top: 40px;

}

.tit {

    display: block;
}


/* 屏幕宽度至少为 600px 时的样式 */
@media screen and (min-width: 600px) {
    body {

        font-size: 20px;
    }
}

/* 屏幕宽度至少为 900px 时的样式 */
@media screen and (min-width: 900px) {
    body {

        font-size: 14px;
    }
}

/* 屏幕宽度至少为 1200px 时的样式 */
@media screen and (min-width: 1200px) {
    body {

        font-size: 16px;
    }
}

/* 屏幕宽度至少为 1400px 时的样式 */
@media screen and (min-width: 1400px) {
    body {

        font-size: 14px;
    }
}

/* 屏幕宽度至少为 1300px 时的样式 */
@media screen and (min-width: 1300px) {
    body {

        font-size: 16px;
    }

    .index-product .title .nav .swiper-slide span {
        font-size: 30px !important;
    }

    .index-product .title .nav .swiper-slide p {
        font-size: 14px;
    }
}

/* 屏幕宽度至少为 1200px 时的样式 */
@media screen and (min-width: 1800px) {
    body {

        font-size: 16px;
    }

    .index-header .header .nav a {
        font-size: 18px;
    }

    .common-header .header .nav a {
        font-size: 18px;
    }
}