/* Make the main content column use more width on large screens */
.wy-nav-content {
    max-width: none;     /* remove fixed max-width */
}

/* Optional: add a small max width instead of infinite */
@media (min-width: 800px) {
    .wy-nav-content {
        max-width: 800px;   /* pick a value you like */
    }
}