hugo-academic/themes/hello-world/assets/scss/template.scss

// Narrower container for Hello World sections (primarily Blank widget content).
@media (min-width: 1200px) {
  .home-section .container {
    max-width: 880px;
  }
}
@media (min-width: 992px) {
  .home-section .container {
    max-width: 880px;
  }
}