/* 去掉margin，padding  盒子模型为border-box：padding和border就不会撑大盒子了（前提padding和border不会超过width宽度）*/
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: #E6E6E6;
    font-size: 15px;
}

.contain {
    width: 1300px;
    /* height: 1000px; */
    margin: 0 auto;
    background-color: #fff;
    -webkit-box-shadow: 0 0 2.5em rgba(0, 0, 0, .3);
    -moz-box-shadow: 0 0 2.5em rgba(0, 0, 0, .3);
    box-shadow: 0 0 2.5em rgba(0, 0, 0, .3);
    padding-left: 15px;
    padding-right: 15px;
}

.header_h2 {
    text-align: center;
    font-size: 30px;
    line-height: 1.8;
    font-weight: 500;
    color: #2e6da4;
    /* margin-top: 20px;
    margin-bottom: 10px; */
    padding: 20px 0 40px;

}

.surface {
    text-align: left;
    margin-left: 290px;
    font-size: 19px;
}

.surface span {
    font-weight: bold;
}

.surface p {
    margin-top: 30px;
    margin-bottom: 30px;
}






/* header {
    margin-top: 20px;
    margin-bottom: 10px;
} */


.main {
    width: 945px;
}

.index_h3 {
    color: #337ab7;
    font-size: 24px;
    font-weight: 500;
    line-height: 1.8;
    margin-top: 21px;
    margin-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.index_h4 {
    color: #0066CC;
    font-size: 20px;
    font-weight: 500;
    line-height: 1.8;
    text-indent: 1em;
    margin-top: 10px;
    margin-bottom: 10px;
}

.sequence_map_explain_p {
    font-size: 20px;
    line-height: 1.8;
    margin-left: 1em;
    text-indent: 2em;
    margin-bottom: 15px;
    margin-top: 15px;
    margin-right: 1em;
}


.index_p_table {
    text-align: center;
    margin: 0 0 20px;
}

.table_3_header {
    text-align: center;
    margin: 20px 0;
}

.table_1_header {
    text-align: center;
    margin: 10px 0;
}

.ol_1 {
    padding-left: 40px;
}

.ol_1 li {
    line-height: 1.8em;
    margin-left: 2em;
}

.table_sample_div {
    padding: 0 2em;
}

.table_sample {
    width: 100%;
    vertical-align: bottom;
    margin-bottom: 20px;
}

.table_sample,
th,
td {
    border: 1px solid #ddd;
    border-collapse: collapse;
    border-spacing: 0;
}

.bg-info {
    background-color: #d9edf7;
}

.table_sample th {
    border-bottom-width: 2px;
    padding: 8px;
    text-align: left
}

.table_sample td {
    padding: 8px;
}

.table_sample tbody tr:hover {
    background-color: #f5f5f5
}

.mapping_explain_p {
    text-indent: 2em;
    line-height: 1.8em;
    padding: 0 2em;
    margin: 0 0 0.5em;
}

.mapping_explain_ol {
    margin-bottom: 10px;
    padding-left: 40px;
}

.mapping_explain_ol li {
    line-height: 1.8em;
    margin-left: 2em;
}






a {
    color: #337ab7;
    text-decoration: none;
    cursor: pointer;
}

a:hover {
    color: #23527c;
    text-decoration: underline;
}

.nav_div {
    width: 200px;
    height: 200px;
    position: fixed;
    top: 50%;
    left: 50%;
    margin-left: 450px;
    margin-top: -100px;

}

.nav_div>ul>li {
    list-style: none;
    padding: 5px 0px 5px 20px;
}

.nav_div>ul>li>ul>li {
    list-style: none;
    padding: 5px 5px;
}

.nopad_li {
    padding-bottom: 0 !important;
}


footer {
    text-align: center;
    border-top: 1px solid #eee;
    padding-top: 20px;
    margin-top: 30px;
}

footer .footer_div p {
    margin: 0 0 10px;
}

.list-unstyled {
    list-style: none;
    padding-bottom: 30px;
}




.list-inline li {
    display: inline-block;
    padding-left: 5px;
    padding-right: 5px;
    line-height: 1.8em;
}