body{font-family:"Noto Sans JP","Helvetica Neue",Arial,"Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif;text-shadow:0 .05rem .1rem rgba(0,0,0,.5);background-image:url("../images/bg.webp");fallback:url("../images/bg.gif");background-repeat:repeat;background-size:cover;margin:0}body::before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(64,64,64,.8);z-index:-1}.cover-container{max-width:42em}.nav-masthead .nav-link{color:rgba(255,255,255,.5);border-bottom:.25rem solid transparent}.nav-masthead .nav-link:hover,.nav-masthead .nav-link:focus{border-bottom-color:rgba(255,255,255,.25)}.nav-masthead .nav-link+.nav-link{margin-left:1rem}.nav-masthead .active{color:#fff;border-bottom-color:#fff}.btn-light,.btn-light:hover,.btn-light:focus{color:#333;text-shadow:none}