html,body{
    padding: 0;
    margin: auto;
    text-align: center;
}

header{
    width: 90%;
    height: auto;

    margin: auto;

    text-align:left;
}

header > a{
    text-decoration: none;
    color: rgb(165, 27, 27);
    font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;

}

header > a > img{
    width: 350px;
    margin-top: 3%;
    margin-left: 4%;
}
header > nav{
    height: 100px;

    text-align: center;

}

header > nav > ul{
    padding: 0;
    list-style: none;
}

header > nav > ul > li{
    width: 150px;

    display: inline-block;
}

header > nav > button{
    display: none;

    border: none;
    background: none;

    font-size: 23px;
    color: rgb(165, 27, 27);

    font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;

}

header > nav > ul > li > a{
    
    text-decoration: none;

    color: black;

    font-size: 24px;
    font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;

}

.contents{
    height: auto;
}

footer{
    height: 100px;
    margin-top: 5%;

    text-align: center;
    font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;

}

@media screen and (max-width:732px){

    header {
        text-align: center;
    }

    header > a > img{
        
        width: 200px;   
    }

    header > nav{
        height: auto;

        margin-top: 10%;
    }

    header > nav > ul{
        text-align: center;
    }

    header > nav > ul > li{
        width: auto;
        height: 80px;
        display: none;
    }

    header > nav  > button{
        
        width: auto;
        height: 70px;
        
        margin: auto;

        display: block;
    }
    
}