.voice-sec h2.ttl {
    font-size: 22px;
    font-size: 2.2rem;
    text-align: center;
    font-family: "游明朝", "Yu Mincho", YuMincho, "Hiragino Mincho ProN", "Hiragino Mincho Pro", HGS明朝E, メイリオ, Meiryo, serif;
    font-weight: 500;
}

@media (min-width: 769px) {
    .voice-sec h2.ttl {
        font-size: 28px;
        font-size: 2.8rem;
        margin-bottom: 30px;
    }
}

.voice-sec article {
    background-color: #f2f2f2;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid #999;
}

.voice-sec article p {
    margin-bottom: 0;
}

.marker-text {
    display: inline;
    background: linear-gradient(transparent 50%, #FDE3E5  50%);
}

@media only screen and (max-width: 768px) {
    .image-box.mb {
        width: 90%;
        max-width: 500px;
    }
}