@charset "utf-8";
/* ------ 共通設定 ------ */
body {
    color: #333333;
    font-size: 15px;
    line-height: 2;
    font-family: "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    margin-left: 50px;
}

h1 {
    font-size: 30px;
    margin: 10px 0 10px;
}

h2 {
    font-size: 18px;
    margin: 20px 0 10px;
}

nav a {
    color: #15dddd;
    text-decoration: none;
}

nav a:hover {
    color: #09c0c0;
}

/* ------ ヘッダー部分 ------ */
header {
    width: 960px;
    height: 170px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ------ ナビ部分 ------ */
nav ul{
    width: 960px;
    margin: 0 auto;
    list-style: none;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
}


#visual-area{
    width: 960px;
    margin: 0 auto;
}

/* ------ メイン部分 ------ */
#main {
    width: 960px;
    margin: 20px auto;
    display: flex;
    justify-content: space-between;
}

#contents-area, #side-area {
    padding: 20px 40px;
    box-sizing: border-box;
}

#contents-area {
    width: 680px;
}

#side-area {
    width: 240px;
    padding: 20px 20px;
    font-size: small;
}

/* ------ フッター部分 ------ */
footer {
    width: 960px;
    margin: 15px auto;
    text-align: center;
    color: black;
    padding: 10px 0;
}

footer small {
    font-size: 12px;
}