.about_main
{
    width: 1024px;
    margin: 0 auto;
    background: #fff;
}

.d_tab
{
    margin-top: 60px;
    margin-bottom: 60px;
    display: inline-block;
    border: 1px solid #ddd;
    border-radius: 5px;
    -moz-border-radius: 5px;
    -ms-border-radius: 5px;
    -o-border-radius: 5px;
    -webkit-border-radius: 5px;
}

    .d_tab ul
    {
        list-style: none;
    }

        .d_tab ul li
        {
            float: left;
            list-style-type: none;
        }

            .d_tab ul li a
            {
                text-align: center;
                width: 100px;
                height: 30px;
                line-height: 30px;
                display: block;
                font-size: 12px;
                color: #333;
                border-left: 1px solid #ddd;
            }

                .d_tab ul li a.select
                {
                    background: #006FBC;
                    color: #fff;
                }

            .d_tab ul li:first-child a
            {
                border-top-left-radius: 5px;
                border-bottom-left-radius:5px;
                -moz-border-top-left-radius: 5px;
                -ms-border-top-left-radius: 5px;
                -o-border-top-left-radius: 5px;
                -webkit-border-top-left-radius: 5px;
                -moz-border-bottom-left-radius: 5px;
                -ms-border-bottom-left-radius: 5px;
                -o-border-bottom-left-radius: 5px;
                -webkit-border-bottom-left-radius: 5px;
            }
            .d_tab ul li:last-child a
            {
                border-top-right-radius: 5px;
                border-bottom-right-radius:5px;
                -moz-border-top-right-radius: 5px;
                -ms-border-top-right-radius: 5px;
                -o-border-top-right-radius: 5px;
                -webkit-border-top-right-radius: 5px;
                -moz-border-bottom-right-radius: 5px;
                -ms-border-bottom-right-radius: 5px;
                -o-border-bottom-right-radius: 5px;
                -webkit-border-bottom-right-radius: 5px;
            }

.a_content
{
    height: auto;
    margin: auto;
    margin-top: 30px;
    line-height: 25px;
    padding-bottom: 30px;
}

p
{
    display: block;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}