Kasuga

This plugin adds a convenient copy button to every code block on your blog posts, allowing users to copy code with a single click.
Highlights:
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Easy One-Click Copying: Your blog visitors can instantly copy code to their clipboard by simply clicking a button on any code block.
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Flexible Customization: From a dedicated settings page, you can freely adjust the button’s position, size, color, and labels (for both before and after copying) to perfectly match your site’s design.
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Lightweight and Fast: The plugin only loads the necessary CSS and JavaScript, ensuring it won’t impact your site’s performance.
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This plugin makes it super easy for your blog visitors to grab code snippets. By adding a simple copy button to every code block, it boosts convenience and makes your code content much more user-friendly.

Sticky Copy Button for Code Blocks

Adds a customizable copy button to code blocks, making it easy for users to copy code with a single click.

Jakobodb

This utility plugin adds a series of css classes that allow easy addition of set padding and margin to any element.
For basic use, the classes follow the format of [margin / padding][location letter: all, top, right, bottom, left, vertical, horizontal][amount: none, small, medium, large, extra large (0.5em, 1em, 2em, 4em)]
Also in the basic classes are percentages, taking the place of the last letter in the format [p][percentage] e.g. p7-5 for 7.5% or p15 for 15%.
Examples of Basic Classes:
<ul>
<li>man > margin all none = margin: 0px;</li>
<li>prl > padding right large = padding-right: 2em;</li>
<li>mvp5 > margin vertical 5% = margin: 5% 0;</li>
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Additional utility classes – First / Last child, Child / Sub
To add selective classes for adding margin / padding to the first / last child, any child, or any sub-element of the required element, simply add ‘last-‘, ‘first-‘, ‘child-‘, or ‘sub-‘ to the beginning of the basic classes.
Examples of Child Classes
<ul>
<li>last-mhxl > last-child margin horizontal extra large = last-mhxl :last-child { margin: 0 4em; }</li>
<li>last-pbn > last-child padding bottom none = last-pbn :last-child { padding-bottom: 0; }</li>
<li>first-mtm > first-child margin top medium = first-mtm :first-child { margin-top: 2em; }</li>
<li>child-mal > child margin all large = child-mal > * { margin: 4em; }</li>
<li>sub-php5 > sub elements padding horizontal 5 percent = sub-php5 * { padding: 0 5%; }</li>
</ul>
Additional utility classes – Responsive margin / padding
You can also apply the margin / padding required to certain screen widths, ranging from xl (min: 1200px) to xs (max: 480px). To use these responsive classes, add -[screen-size] to the end of the basic classes.
Examples of Responsive Classes
<ul>
<li>mrm-lg > margin right medium, large screen = (max-width: 1199px) and (min-width: 980px) margin-right: 2em;</li>
<li>pas-xs > padding all small, xsmall screen = (max-width: 480px) padding: 0.5em;</li>
<li>mhp15-md > margin horizontal 15%, medium screen = (max-width: 979px) and (min-width: 768px) margin-left: 15%; margin-right: 15%;</li>
</ul>
Full Table of Options
[margin / padding] 
m = margin 
p = padding
[location] 
a = all 
t = top 
r = right 
b = bottom 
l = left 
v = vertical (top + bottom) 
h = horizontal (left + right)
[amount] 
s = small (0.5em) 
m = medium (1.0em) 
l = large (2.0em) 
xl = extra large (4.0em) 
p5 = 5 percent (5.0%) 
p7-5 = 7.5 percent (7.5%) 
p10 = 10 percent (10.0%) 
p12-5 = 12.5 percent (12.5%) 
p15 = 15 percent (15.0%)
[first / last] (prefix) 
first- = > :first-child 
last- = > :last-child
[child / sub] (prefix) 
child- = > * 
sub- = *
[screen-size] (suffix) 
-xs = max-width: 480px 
-sm = max-width: 767px and min-width: 481px 
-md = max-width: 979px and min-width: 768px 
-lg = max-width: 1199px and min-width: 980px 
-xl = min-width: 1200px
Additional utility classes – Boxshadow
Using the boxshadow utility classes, you can quickly add a boxshadow to divs and other elements. The format of the utility classes is as follows: shadowout-[direction][blur]-[shadow opacity].
Examples of Boxshadow
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<li>shadowout-nm-medium > no direction, medium blur, medium opacity = box-shadow: 0 0 .15em 0 rgba(0,0,0,0.27);</li>
<li>shadowout-brm-dark > bottom-right direction, medium blur, dark opacity = box-shadow: .15em .15em .3em 0 rgba(0,0,0,0.54);</li>
</ul>
Options for Boxshadow utility
[direction] 
all directions shift the shadow by .15em 
n = none 
t = top 
b = bottom 
l = left 
r = right 
tl = top-left 
tr = top-right 
bl = bottom-left 
br = bottom-right
[blur] 
s = small (.15em) 
m = medium (.3em) 
l = large (.6em)
[shadow opacity] 
-light = light (0.135 opacity) 
-medium = medium (0.27 opacity) 
-dark = dark (0.54 opacity)

CSS Margin & Padding Utility

Utility for adding css classes for Margin and Padding e.g. .man for 0 margin on all sides, .ptm for 1em padding-top.

Sticky Copy Button for Code Blocks vs CSS Margin & Padding Utility