@charset "utf-8";

section#main_block { padding-top:100px; background-color:#fefefe; }

div#main_block_bg { position:relative; /* background-image: url("../img/main_history.jpg");  background-repeat: no-repeat; background-position: center top; background-size: contain; background-attachment: fixed; */ }
div#main_block_bg::before { content: ""; display: block; position:fixed; top:0; left:0; z-index: -1; width:100%; height:80%; background-repeat: repeat-y; background-image:url('../img/main_sanpai.jpg'); background-position: top center; background-size: cover; }

div#main_block_bg > h2 { font-size:22px; letter-spacing: 0.2em; font-weight: normal; position:absolute; top:300px; left:50%; transform: translateX(-50%); }
div#main_block_bg > h2::before { content: ""; position:absolute; top:-110%; left:50%; transform: translateX(-50%); width:40px; height:40px; background-image: url("../img/logo_green.png"); background-size: contain; background-repeat: no-repeat; background-position: center; }
div#main_block_bg > p { position:absolute; top:350px; left:50%; transform: translateX(-50%); }

@media screen and (max-width:900px) {
    section#main_block { padding-top:70px; background-color:#fefefe; }
    section#main_block::before { height:70px; }
    div#main_block_bg::before { height:50%; background-image:url('../img/main_sanpai.jpg'); background-repeat: no-repeat; background-position: top center; background-size: contain; }
    div#main_block_bg > h2 { font-size:18px; top:230px; }
    div#main_block_bg > h2::before{ top:-110%; width:32px; height:32px; }
    div#main_block_bg > p { top:275px; width:100%; }
}

#white_bg { background-color:#fefefe; }

#content_block { padding:180px 0 100px; width:720px; margin:auto; margin-top:200px; text-align: left; }
#content_block > h3 { padding-bottom:10px; margin-bottom:20px; text-align:left; font-size:22px; font-weight: normal; letter-spacing: 0.2em; border-bottom:dashed 1px #8bcb81; }
#content_block > h3 > span { font-size:18px; letter-spacing: 0.1em; position:relative; padding-left:2em; }
#content_block > h3 > span::before { content:""; top:50%; left:0; width:1.5em; height:1px; background-color:#555; position:absolute; display: inline-block; }
@media screen and (max-width:900px) {
    #content_block { padding:130px 0 80px; width:84%;  margin-top:160px; }
    #content_block > h3 { font-size:18px; }
    #content_block > h3 > span { font-size:16px; }
}

div#txt_block { width:640px; margin:auto; }
div#txt_block > h3 { font-size:18px; line-height: 1.2; padding-bottom:10px; margin-bottom:10px; position:relative; }
div#txt_block > h3::before { content: ""; position:absolute; width:10%; height:1px; left:0; bottom:0; background-color:#4b8b41; }
div#txt_block > h3::after { content: ""; position:absolute; width:90%; height:1px; right:0; bottom:0; background-color:#8bcb81; }
div#txt_block > p { margin-bottom:35px; }
@media screen and (max-width:900px) {
    div#txt_block { width:100%; }
    div#txt_block > h3 { font-size:16px; }
    div#txt_block > p { font-size:12px; }
}