.maintenanceBlock {
    padding: 220px 5%;
}

.maintenanceTitle {
    font-size: 20px;
    max-width: 100%;
    margin: 0 auto;
    color: #333;
    font-weight: bold;
    text-align: center;
    letter-spacing: .1em;
    font-family: "リュウミン M-KL";
}

@media screen and (min-width: 768px) {
    .maintenanceBlock {
        padding: 250px 5%;
    }

    .maintenanceTitle {
        font-size: 2.75rem;
    }
}