.modal_note_block .sub_title{
    font-weight: 300;
    font-size: 18px;
    line-height: 120%;
    color: #FFFFFF;
    margin-bottom: 40px;
    margin-top: -15px;
}

@media (max-width:500px){
    .modal_note_block .main_ttl {
        font-size: 36px;
    }
    .modal_note_block .sub_title{
        font-size: 16px;
        margin-top: 0;
    }
}