Spacing
Spacing utilities are declared via Sass map and then generated with our utilities API.
Glowing adds additional spacing variables to existing Bootstrap spacing ranging between values 0 and 25
Font Size
Quickly change the font-size of text. While our heading classes (e.g., .h1–.h6) apply font-size, font-weight, and line-height, these utilities only apply font-size. Sizing for these utilities matches HTML’s heading elements, so asthe number increases, their size decreases.
Customize your available font-sizes by modifying the $font-sizes Sass map.
.fs-1 text
.fs-2 text
.fs-3 text
.fs-4 text
.fs-5 text
.fs-6 text
Line Height
.lh-*
utilities.
Letter Spacing
.ls-*
utilities.
Gutters
Spacing variables mentioned above can also be used for column gutters. More information regarding Bootstrap gutters can be found on Bootstrap docs