.wy-nav-content {
    max-width: 100% !important;
}

.wy-nav-content-wrap {
    margin-left: 300px;
}

.wy-nav-side {
    width: 300px;
}

@media screen and (max-width: 768px) {
    .wy-nav-content {
        margin-left: 0;
        max-width: 100% !important;
    }
    
    .wy-nav-content-wrap {
        margin-left: 0;
    }
}