robfromerd

Adds smooth transitions between navigations to your WordPress site. This plugin is a fork of “View Transitions”. Note: add “page-animated” category to post or page you want to have a transition animation other than the default fade. This plugin checks for taxonomy capability and adds the capability to pages if not already enabled.
Key Features: 
* Conditional animation support – only pages/posts with the “page-animated” category get enhanced transitions 
* Multiple animation types including fade, slide, swipe, and wipe effects 
* Automatic category taxonomy support for pages 
* Browser compatibility detection 
* Customizable CSS selectors for different themes
<h4>Browser support</h4>
Cross-document view transitions are supported in a variety of browsers, including Chrome, Edge, and Safari. Users with browsers that currently do not support it should not see any adverse effects when the plugin is active. They will simply not benefit from the feature and continue to experience the traditional hard transitions between URLs.
<a href="https://caniuse.com/mdn-css_at-rules_view-transition" rel="nofollow ugc">Please refer to “Can I use…” for a comprehensive overview of browser support for the feature.</a>
<h4>How to Use</h4>
<ol>
<li>Install and activate the plugin</li>
<li>Add the “page-animated” category to any post or page you want to have enhanced transitions</li>
<li>Configure settings in Settings > Reading to customize animations and selectors</li>
<li>Test navigation between pages to see the smooth transitions</li>
</ol>
<h4>Animation Types</h4>
<ul>
<li>Fade – Smooth fade in/out (default)</li>
<li>Slide – Elements slide in from different directions</li>
<li>Swipe – Swipe effect with customizable offsets</li>
<li>Wipe – Wipe effect with angle control</li>
</ul>

Conditional View Transitions

Adds smooth transitions between navigations to your WordPress site.

Jose Mortellaro

When a specific element of the page enters the viewport, it adds the CSS class “in-viewport” to that element.
When the same element goes out from the viewport it remove the CSS class “in-viewport” and adds the class “not-in-viewport”.
To target the elements, you just need to assign them the CSS class “cciv-el”.
It’s useful to add your custom animations on scroll just with a few lines of CSS.
This is a plugin for CSS developers who want to add simple but effective animation only with pure CSS.
In case the user disables JavaScript, the body of the page will have the CSS class “cciv-no-script”. Use it to don’t show strange things when JavaScript is disabled.
The plugin is ultra light. It adds a few lines of pure JavaScript code in the footer and nothing else.
No additional HTTP requests, no additional queries to the database.
If you measure the performance with or without this plugin, you will not notice any difference.
This plugin is useful if:
<ul>
<li>You know how to create an animation in pure CSS.</li>
<li>You have the possibility to assign a CSS class to the element you want to animate.</li>
<li>You have the possibility to add your custom CSS.</li>
</ul>
With the following few lines of pure CSS for example you can create a rotation effect.
.cciv-el{transition: 2s transform ease} 
.cciv-el.in-viewport{transform:rotateY(0deg)} 
.cciv-el.not-in-viewport{transform:rotateY(180deg)} 
.cciv-no-script .cciv-el{transform:none !important}
You can read more about CSS animations and transitions on W3Schools: 
https://www.w3schools.com/css/css3_animations.asp 
https://www.w3schools.com/css/css3_transitions.asp
You can change the selector to target the elements that you want to animate using the filter ‘cciv_el_selector’. 
If for example instead of the CSS class .cciv-el you want something specific to your case, you can add this code in the functions.php of your child theme if any, or in a functional plugin:
<pre><code>add_filter( 'cciv_el_selector','my_cciv_selector' );
function my_cciv_selector( $selector ){
 return '#my-custom-id .my-custom-class'; //The elements will not be target anymore by .cciv-el but by what you specify here
}
</code></pre>
Don’t lose time any more with heavy jQuery effects, you need just a few lines of CSS, the rest is given by this plugin using few lines of 100% pure JavaScript inlined in the footer.
No performance loss, and no time loss if you have CSS skills.
<h3>Help</h3>
If you need help open a thread on the support forum of this plugin. 
Please, before posting enable the debugging in wp-config.php. Need a step-by-step guide? Read <a href="https://freesoul-deactivate-plugins.com/how-to-enable-debugging-in-wordpress-a-step-by-step-guide/" rel="nofollow ugc">this detailed tutorial</a> on <a href="https://freesoul-deactivate-plugins.com/how-to-enable-debugging-in-wordpress-a-step-by-step-guide/" rel="nofollow ugc">how to enable debugging in WordPress</a> to learn more.

Change class in viewport: create animations with pure CSS

When an element of the page enters the viewport, it adds a CSS class to that element.

Conditional View Transitions vs Change class in viewport: create animations with pure CSS