.secondheader_ttlja{
    font-size: 34px;
    letter-spacing: 0.02em;
}

@media only screen and (max-width: 750px){
    .secondheader_ttlja{
        font-size: 0.40rem;
        line-height: 0.4rem;
    }
    .secondheader_bg {
    height: 0.78rem;
    }
}