change single blog post column layotu

@media(min-width: 981px) {
    .single-post #main-content > .container:before {
        display: none;
    }
    .single-post #left-area {
        width: 64.833%;
        padding-right: 0;
        margin-right: 5.5%;
    }
    .single-post #sidebar {
            width: 29.666%;
            padding-left: 0;
    }
}