Divider

The Divider element provides a simple, standalone shorthand for horizontal and vertical separators. It draws the same line as the border utilities at level 6, the line the steps 60 and 65 draw.

#

Usage

Use divider or divider--h for horizontal dividers, and divider--v for vertical dividers. Dividers automatically detect their background and adjust their appearance for optimal contrast.

#

Automatic Background Detection

By default, dividers automatically detect whether they're on a white, light, dark, or black background and adjust their appearance accordingly. The system categorizes backgrounds into four types for optimal contrast:

  • White: Very light backgrounds (gray-70 to gray-75 and pure white)
  • Light: Light gray backgrounds (gray-50 to gray-65)
  • Dark: Dark gray backgrounds (gray-30 to gray-45)
  • Black: Very dark backgrounds (gray-10 to gray-25 and pure black)
White Background
Divider uses darkest style (level 7)
Light Background (gray-70)
Divider uses dark style (level 6)
Dark Background (gray-30)
Divider uses light style (level 3)
Black Background
Divider uses lightest style (level 1)
TRMNL Logo Auto Background Detection 
<!-- Dividers automatically detect their background -->
<div class="bg--white">
  <div class="divider"></div> <!-- Automatically becomes divider--on-white -->
</div>

<div class="bg--gray-20">
  <div class="divider"></div> <!-- Automatically becomes divider--on-light -->
</div>

<div class="bg--gray-50">
  <div class="divider"></div> <!-- Automatically becomes divider--on-dark -->
</div>

<div class="bg--black">
  <div class="divider"></div> <!-- Automatically becomes divider--on-black -->
</div>
#

Manual Background Control

You can manually specify the background type using divider--on-white, divider--on-light, divider--on-dark, or divider--on-black classes when automatic detection isn't suitable.

All variants on white
on-white (optimal)
on-light
on-dark
on-black (poor contrast)
All variants on black
on-white (poor contrast)
on-light
on-dark
on-black (optimal)
TRMNL Logo Manual Background Control 
<!-- Manually specify background type -->
<div class="divider--on-white"></div>  <!-- For white backgrounds -->
<div class="divider--on-light"></div>  <!-- For light backgrounds -->
<div class="divider--on-dark"></div>   <!-- For dark backgrounds -->
<div class="divider--on-black"></div>  <!-- For black backgrounds -->

<!-- Works with vertical dividers too -->
<div class="divider--v divider--on-white"></div>
<div class="divider--v divider--on-light"></div>
<div class="divider--v divider--on-dark"></div>
<div class="divider--v divider--on-black"></div>
#

Vertical Dividers

Vertical dividers work the same way as horizontal dividers, with automatic background detection for all four background types.

Left Side White background
Right Side Auto-detected
Left Side Black background
Right Side Auto-detected
TRMNL Logo Vertical Dividers 
<!-- Vertical divider with auto background detection -->
<div class="divider--v"></div>

<!-- Manually specified vertical dividers -->
<div class="divider--v divider--on-white"></div>
<div class="divider--v divider--on-light"></div>
<div class="divider--v divider--on-dark"></div>
<div class="divider--v divider--on-black"></div>
#

Common Usage Patterns

$1,234 Revenue
42 Orders
$29.38 AOV
TRMNL Logo Section Separation 
<!-- Replacing common border--h-x w--full pattern -->
<!-- Old way: -->
<div class="border--h-6 w--full"></div>

<!-- New way (with auto background detection): -->
<div class="divider"></div>

<!-- Or with manual specification: -->
<div class="divider--on-light"></div>