/*　すべてのページに適用される設定　*/
html {
    font-size: 16px;
    font-family: sans-serif;
}
* {
    box-sizing: border-box;
}
body {
    margin: 0 0 0 0;
}
p, li, td {
    line-height: 1.7;
}
a:link {
    color: #0000EE;
    text-decoration: none;
}
a:visited {
    color: #551A8B;
    text-decoration: none;
}
a:hover {
    color: #0033CC;
    text-decoration: underline;
}
a:active {
    color: #FF0000;
    text-decoration: underline;
}
img {
    max-width: 100%;
}


/*　すべてのページに適用　－　ヘッダー　*/
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header ul {
    display: flex;
    align-items: center;
    margin: 0px 20px 0px 0px;
    gap: 40px;
    list-style-type: none;
    font-size: 1.4rem;
}

header ul a:link {
    color: #253958;
}
header ul a:visited {
    color: #253958;
}
header ul a:hover {
    text-decoration: none;
}
header ul a:active {
    text-decoration: none;
}

.langchange {
    font-size: 0.8em;
    background-color: lightgray;
    border-bottom: solid 2px;
}


/*　すべてのページに適用　－　ヒーロー　*/
.hero {
    background-position: center;
    background-size: cover;
    color: white;
    text-align: center;
    margin: 0;
}
.hero.index {
    padding: 287px 0;
    background-image: url(../images/home-hero.png);
}
.hero.company {
    padding: 287px 0;
    background-image: url(../images/home-company.png);
}
.hero.contact {
    padding: 287px 0;
    background-image: URL(../images/home-contact.png)
}
.hero.ninja {
    padding: 287px 0;
    background-image: URL(../images/home-ninja.png)
}


/*　すべてのページに適用　－　メイン　*/
main {
    margin: 0 auto 60px auto;
    max-width: 1000px;
}
main > h2 {
    margin: 60px 0 20px 0;
    border-bottom: 2px solid #253958;
    padding: 0 0 5px 0;
    color: #253958;
    font-size: 1.3rem;
}


/*　すべてのページに適用　－　フッター　*/
.copyright {
    margin-top: 20px;
    margin-bottom: 0;
    padding-top: 75px;
    padding-bottom: 75px;
    background-color: #253958;
    color: #FFFFFF;
    text-align: center;
}


/*　個別のスタイル　*/

/* 　index.html　*/
.history {
    border-collapse: collapse;
    margin: 0 auto;
    width: 800px;
}
.history td {
    border-bottom: 4px solid #DBDBDB;
    padding: 20px;
    text-align: center
}

/*　company.html　*/
.overview {
    border-collapse: collapse;
    margin: 0 auto;
    width: 800px;
}
.overview th, .overview td {
    border: 2px solid #253958;
    padding: 20px;
    text-align: center;
}

/*　ninja.html　*/
.ninja-spec {
    background: #dadada;
}

.ninja-container {
    display: flex;
    gap: 40px;
}

.ninja-features {
    color: red;
    font-size: 1.3em;
    font-weight: bold;
    border-top: solid 2px black;
    border-bottom: solid 2px black;
}

/*　モバイル対応　*/
@media(max-width: 480px) {
    header {
        flex-wrap: wrap;
    }
    header ul {
        flex-wrap: wrap;
        gap: 20px;
    }
    main {
        margin: 0 4%;
    }
}