Modal/Popover - Reposition
The modal / popover element is by default position: fixed in the center of the screen.
Using regular CSS, you can easily re-position that element anywhere you like, no JS required.
Demo
HTML
<!-- `popovertarget="pop-auto"` on the `button` connects to `id="pop-auto"` on the `dialog` -->
<button popovertarget="pop-auto">
Toggle Re-positioned Popover
</button>
<dialog popover id="pop-auto">
<h2>I'm an <code>auto</code> Popover!</h2>
<p>The default position when opened is `position: fixed`, in the center of the screen.</p>
<p>But you can re-position the it simply with CSS.</p>
</dialog>CSS
/* If you wish to re-position the popover via CSS... */
dialog {
position: relative; /* Replaces the default position: fixed */
margin: 0; /* Remove the default center/center */
top: 10%; /* Provide a different top/left */
left: 50%; /* Provide a different top/left */
}JS
No JS required.Baseline
CodePen
See the Pen on CodePen.