#under_main {
    height: 85vh;
}
#mainnav {
	background-color:rgb(177, 45, 36);
	opacity: 0.9;
	transition: 1s;
	box-shadow: 5px 5px 5px rgb(108 108 109 / 50%);
}

#under_main .airbnb-embed-frame {
    width: 450px; 
    
    margin:150px auto 0;
}

@media screen and (max-width: 768px) {
    #under_main {
       height: 50vh;
       
    }
     #under_main .link {
        width: 90%;
        font-family: 游ゴシック体, "Yu Gothic", YuGothic, "ヒラギノ角ゴシック Pro", "Hiragino Kaku Gothic Pro", メイリオ, Meiryo, Osaka, "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
        margin-top: 100px;
        box-shadow: 3px 3px 10px rgba(154, 154, 155, 0.5);
     }
     #under_main .link p {
        padding: 10px;
     }
    
    
}