#navi_case li {
    width: 24.76%;
}

#navi_case li#cate01 {
    background-color: #db4721;
    border-bottom: none;
}

#navi_case li#cate02 {
    background-color: #ff7404;
    border-bottom: none;
}

#navi_case li#cate03 {
    background-color: #00bb54;
    border-bottom: none;
}

#navi_case li#cate04 {
    background-color: #006cc2;
    border-bottom: none;
}

#navi_case li#cate01 a {
    background: url(/include/contents/htdocs/contents/rdc/case/common/img/icn05_case.png) no-repeat 10px 18px;
    padding: 14px 0 14px 30px;
    border-bottom: 4px solid #9F1C25;
}

#navi_case li#cate02 a {
    background: url(/include/contents/htdocs/contents/rdc/case/common/img/icn05_case.png) no-repeat 10px 18px;
    padding: 14px 0 14px 30px;
    border-bottom: 4px solid #c26b26;
}

#navi_case li#cate03 a {
    background: url(/include/contents/htdocs/contents/rdc/case/common/img/icn05_case.png) no-repeat 10px 18px;
    padding: 14px 0 14px 30px;
    border-bottom: 4px solid #279c5e;

}

#navi_case li#cate04 a {
    background: url(/include/contents/htdocs/contents/rdc/case/common/img/icn05_case.png) no-repeat 10px 18px;
    padding: 14px 0 14px 30px;
    border-bottom: 4px solid #175d92;
}


@media screen and (min-width: 501px){
    .pcdn {
        display: none;
    }
}

@media screen and (max-width: 500px){
    img {
        width: 100%;
        height: auto;
    }
    #Wrapper {
        width: 100%;
        padding-right: 15px;
        padding-left: 15px;
        box-sizing: border-box;
    }
    .breadcrumbs {
        margin: 0 auto 10px auto;
        width: 100%;
    }
    .spdn {
        display: none;
    }
    #CareerBox {
        width: 100%;
        margin-bottom: 30px;
    }
    .col-left {
        float: none;
        width: 100%;
        margin-right: 0;
    }
    #case h1 img {
        width: 60%;
        display: block;
        margin: 40px auto 20px auto;
    }
    #case .lead_case {
        text-align: center;
        display: block;
        font-size: 12px;
        margin: 0 0 20px 0;
    }
    #navi_case ul {
        font-size: 0;
    }
    #navi_case li {
        float: none;
        width: 49.66%;
        display: inline-block;
        border-right: none;
    }
    #navi_case li:nth-child(even) {
        margin-left: 2px;
    }
    #navi_case li:nth-child(n+3) {
        margin-top: 2px;
    }
    #navi_case li a {
        font-size: 14px;
    }
    #navi_case li#cate01 a {
        background-position-x: 15px;
        background-position-y: 17px;
        padding: 14px 0px 14px 35px;
    }
    #navi_case li#cate02 a {
        background-position-x: 15px;
        background-position-y: 17px;
        padding: 14px 0px 14px 35px;
    }
    #navi_case li#cate03 a {
        background-position-x: 15px;
        background-position-y: 17px;
        padding: 14px 0px 14px 35px;
    }
    #navi_case li#cate04 a {
        background-position-x: 15px;
        background-position-y: 17px;
        padding: 14px 0px 14px 35px;
    }
    #case .detailboxleft_case {
        float: none;
        margin: 0 auto;
        width: 160px;
    }
    #case table.detailboxtable_case th, table.detailboxtable_case td {
        font-size: 12px;
    }
    #case .detailboxright_case p {
        font-size: 20px;
    }
    #case .detailboxright_case {
        float: none;
        width: 100%;
    }
    .detailboxtable_case td img {
        width: 13px;
    }
    #case #actionbtn_case a {
        font-size: 20px;
        width: 95%;
    }
    #case #actionbtn_case a img {
        width: 20px;
    }
    #section_caseList .listbox_case dl {
        background-repeat: no-repeat, no-repeat;
        background-position: 0% center, 96% center;
    }
    #section_caseList .listbox_case dt {
        font-size: 14px;
        margin-bottom: 5px;
        padding: 8px 20px 0px 77px;
    }
    #section_caseList .listbox_case dd {
        font-size: 12px;
        text-decoration: none;
        padding: 8px 20px 0px 77px;
    }
}