@charset "UTF-8";
body {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background: rgb(235, 222, 198);
    background-image: url(bg.jpg);
    background-position: center;
    color: rgb(48, 80, 80);
    font-family: Segoe UI, Noto Sans JP, san-serif;
}

a {
    text-decoration: none;
    color: rgb(48, 80, 80);
}

div {
    width: 90%;
    margin: 0 auto;
    background: rgb(235, 222, 198);
    opacity: .9;
    min-height: 100vh;
}

header {
    padding: 2em 3em;
}

header h1 {
    margin-top: 0;
    margin-bottom: 0;
}

header p {
    margin: 0;
}

main {
    width: 90%;
    margin: 0 auto;
}

section {
    width: 90%;
    margin: 0 auto;
}

footer {
    text-align: center;
    color: #eee;
}