@media (max-width: 1280px) {
    html {
        font-size: 16px;
    }

    .layout-area {
        width: 100vw;
    }

    .left-menu-area {
        left: -230px;
    }

    .right-content-area {
        width: 94vw;
        margin-left: 3vw;
    }

    .content-half-area {
        width: 94vw;
    }

    .content-quarter-area {
        width: 94vw;
    }

    .left-menu-open-close-button{
        display:inline-block;
    }
}