body{font-family: "Shuei Mincho M";}
 
.content_wrap {border-radius: 30px;}

@media (max-width: 640px) {
article.bg_color {width:95%; margin:0 auto;}
     #kv {
        width: 95vw;
        margin-left: auto;
        margin-right: auto;
    }
            #home_menu h3 {
        width: 95vw;
        margin-left: calc((95vw - 100%) / 2* -1);
    }
}