@media screen and (max-width: 750px) {
    .info_list dd {
        margin-top: 1.5px;
        padding: 0 8px 3px;
        font-size: 1.1rem;
        line-height: 1.2rem;
    }
    .info_list dt {
        margin-top: 1.5px;
        font-size: 1.25rem;
    }
    h1.l_ttl span.txt {
        margin-left: 2rem;
    }
    section.w_bk {
        padding: 10px;
        overflow-y: scroll;
        height: 500px;
    }
    section.w_bk::-webkit-scrollbar {
        width: 12px;
        background: #eee;
    }
    section.w_bk::-webkit-scrollbar:horizontal {
        height: 12px;
    }
    section.w_bk::-webkit-scrollbar-button {
        width: 12px;
        height: 12px;
        background: #666;
    }
    section.w_bk::-webkit-scrollbar-piece {
        background: #eee;
    }
    section.w_bk::-webkit-scrollbar-piece:start {
        background: #eee;
    }
    section.w_bk::-webkit-scrollbar-thumb {
        background: #c0c0c0;
    }
    section.w_bk::-webkit-scrollbar-corner {
        background: #c0c0c0;
    }
}