@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&display=swap');

body {
    font-family: 'Noto Sans JP', sans-serif;
}

/* 既存のCSSコードはそのまま以下に続きます */
body {
    margin: 0;
    font-family: 'Noto Sans JP', sans-serif;
    background-color: #87ceeb;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
    border: 1px solid #000;
    padding: 40px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    width: 100%;
}

.intro-section h1 {
    margin: 40px 0;
    font-size: 3em;
}

.navbar {
    margin: 40px 0;
    padding: 20px 0;
    background-color: white;
    border-top: 2px solid #000;
    border-bottom: 2px solid #000;
}

.navbar a {
    margin: 0 25px;
    text-decoration: none;
    color: #87ceeb;
    font-weight: bold;
    font-size: 1.5em;
}

.navbar a:hover {
    text-decoration: underline;
}

.intro-section p {
    margin: 40px 0;
    font-size: 1.5em;
}