.caseabout{color:#234363;margin-left:auto;margin-right:auto;max-width:1200px;width:100%}.caseabout_item{margin-bottom:50px;position:relative}.caseabout_item:first-child:before{right:-70px;top:100px}.caseabout_item:first-child:before,.caseabout_item:nth-child(2):before{background:url() no-repeat 50%;background-size:contain;content:"";display:block;height:200px;position:absolute;width:200px;z-index:-1}.caseabout_item:nth-child(2):before{left:-80px;top:90px}.caseabout_item:nth-child(3):before{background:url() no-repeat 50%;background-size:contain;content:"";display:block;height:200px;position:absolute;right:-30px;top:-50px;width:200px;z-index:-1}.caseabout_ttl{color:#234363;font-size:20px;font-weight:700;margin-bottom:.5em;padding-top:270px;text-align:center}.caseabout_body{line-height:1.8}.caseabout_img{height:auto;left:calc(50% - 150px);margin:0 0 10px;max-width:300px;position:absolute;top:0}.caseabout_txt{font-size:16px;text-align:justify}.caseabout_txt p{margin-bottom:1em}@media screen and (min-width:768px){.caseabout_item{margin-bottom:120px;padding-right:7.5%}.caseabout_item:first-child:before{height:350px;right:-70px;top:260px;width:350px}.caseabout_item:nth-child(2):before{height:350px;left:-70px;top:260px;width:350px}.caseabout_item:nth-child(3):before{height:350px;right:-60px;top:-30px;width:350px}.caseabout_ttl{font-size:36px;margin-bottom:1em;padding-top:0;text-align:left}.caseabout_body{display:flex;flex-direction:row-reverse;flex-wrap:wrap;justify-content:space-between}.caseabout_img{flex:0 0 37.83%;margin-bottom:0;margin-top:20px;max-width:100%;position:static;width:auto}.caseabout_txt{flex:0 0 54.05%;font-size:20px}.caseabout_item:nth-child(2n){padding-left:7.5%;padding-right:0}.caseabout_item:nth-child(2n) .caseabout_ttl{margin-left:45.94%}.caseabout_item:nth-child(2n) .caseabout_body{flex-direction:row}}