.door_nav{display:block}.door_nav li{width:75%;margin:8px auto}@media (max-width: 979px){.door_nav li{width:100%}}.door_nav li a{display:block;padding:15px 3%;text-align:center;text-decoration:none;font-weight:bold;letter-spacing:1px;font-size:18px;border-radius:5px;border:1px solid #153f8b;background:#fff;color:#153f8b;background:#153f8b;color:#fff}.door_nav li a:hover{background:#153f8b;color:#fff;background:#fff;color:#153f8b}.door_nav{justify-content:space-around}.plan{padding:80px;position:relative}@media (max-width: 979px){.plan{padding:10% 5vw}}.hoken{background-color:#e2eafb}.plan_short{background-color:#F5F6F7}.seikei_soudan{background-color:#a5d1ea}.others{background-color:#CCE3E7}.others .m_ttl{border-color:#066DA1;color:#066DA1}.m_ttl{background:#fff;border:3px solid #182983;color:#182983;padding:5px 3%;text-align:center;position:absolute;top:-25px;left:0;right:0;width:600px;margin:0 auto;border-radius:50px;font-size:24px;font-weight:bold}@media (max-width: 979px){.m_ttl{margin:0 20px;width:calc(100% - 40px);max-width:500px;margin-left:auto;margin-right:auto;font-size:min(3.5vw, 24px)}}