_sass/_libs/uswds/scss/components/_layout.scss
// Flexbox positioning to move sidenav below main content on small screens
.usa-layout-docs__sidenav {
order: 2;
padding-top: units(4);
@include at-media("desktop") {
padding-top: 0;
}
}
.usa-layout-docs__main {
@include at-media("desktop") {
order: 2;
}
}