/* ヘッダー上部 */
#header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

#header h1 {
    font-family: "Hachi Maru Pop", cursive;
    font-weight: 480;
    font-size: 32px;
    margin: 20px;
    color: lightseagreen;
    text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.1);
}

/* ヘッダー各種SNSリンク */
#header nav ul {
    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    margin-right: 30px;
}

#header nav ul li {
    margin: 0 20px;
}

#header nav ul li a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    text-align: center;
}

#header nav ul li a img {
    width: 32px;
    height: 32px;
}

#header nav ul li a:hover {
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 100%;
}

/* ナビゲーションバー */
#nav nav ul{    
    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
}

#nav nav ul li{
    margin: 0 10px;
}

#nav nav ul li a{
    display: block;
    text-align: center;
    min-width: 180px;
    font-size: 20px;
    text-decoration: none;
    color: black;
    padding: 8px 0;
}

#nav nav ul li a:hover{
    box-shadow: 0 0 10px rgba(32, 178, 170, 0.4);
}

/* ナビゲーションバーのアクティブリンク */
#main-page li#main>a,
#info-page li#info>a,
#peerpro-page li#peerpro>a,
#game-page li#game>a,
#study-page li#study>a{
    color: black;
    border-bottom: 4px solid lightseagreen;
    box-shadow: 0 0 20px rgba(32, 178, 170, 0.4);
    border-radius: 4px;
}