body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    background: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 1rem;
    font-size: 0.95rem;
}

main {
    padding: 2rem 1rem;
    text-align: center;
}

h1 {
    color:black;
    margin-bottom: 1rem;
}

/* メイン内容
----------------------------------------------------------- */
ul {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    text-align: center;
    max-width: 500px;
    line-height: 1.8;
}

/* access要素
----------------------------------------------------------- */
.access{
    text-align: center;
    margin: 30px 0 15px 0;
    font-size: 2rem;
    font-weight: bold;
}

.text-align{
    text-align: center;
}

.text-align iframe{
    width: 85%;
    height: 400px;
    padding-bottom: 30px;
}

@media screen and (min-width :768px) {
    .access{
    font-size: 2.5rem;
    margin-bottom: 20px;
    }
}

@media screen and (min-width :990px) {
    .access{
    font-size: 3rem;
    margin-bottom: 30px;
    }
}