.case-contents {
    max-width: 1400px;
    margin: 50px 0 0px 0;
}

.body-area a {
    text-decoration: underline;
}

.case-contents h3 {
    font-size: 22px;
    color: rgb(15, 82, 109);
}

.case-contents img {
    margin: 30px 0 30px 15px;
}

.about-business {
    max-width: 1300px;
}

#rent-core-sys-img{
    max-width: 700px;
}

#rent-sys-conf-img{
    max-width:1000px;
}

#substitute-payment-img{
    max-width: 550px;
}

#collection-agency-img {
    max-width: 500px;
}

#rent-process-img {
    max-width: 570px;
}

#rent-judging-img {
    max-width: 520px;
}


/* デスクトップ　大　フルHD付近 */
@media screen and (min-width:1800px) and (max-width:2100px) {

}


/* デスクトップ　特大　４K付近 */
@media screen and (min-width:2100px){

}

/* タブレット(縦) */
@media screen and (min-width:420px) and (max-width:767px) {  

}


/* スマフォ大(縦) */
@media screen and (max-width:420px){

    .case-contents {
        margin: 20px 0 0px 0;
    }
    .case-contents img {
        margin: 15px 0 30px 0px;
    }

    .case-contents h3 {
        font-size: 18px;
    }
    



}