footer, header, hgroup, main, nav, section {\n  display: block;\n}\n\n// Body\n//\n// 1. Remove the margin in all browsers.\n// 2. As a best practice, apply a default `background-color`.\n// 3. Set an explicit initial text-align value so that we can later use\n//    the `inherit` value on things like `<th>` elements.\n\nbody {\n  margin: 0; // 1\n  font-family: $font-family-base;\n  @include font-size($font-size-base);\n  font-weight: $font-weight-base;\n  line-height: $line-height-base;\n  color: $body-color;\n...

if(variable-exists(include-column-box-sizing) and $include-column-box-sizing, border-box, null);\n  // Prevent columns from becoming too narrow when at smaller grid tiers by\n  // always setting `width: 100%;`. This works because we set the width\n  // later on to override this initial width.\n  flex-shrink: 0;\n  width: 100%;\n  max-width: 100%; // Prevent `.col-auto`, `.col` (& responsive variants) from breaking out the grid\n  padding-right: calc(var(--#{$prefix}gutter-x) * .5); // stylelint-disable-line...