A trick for blendy shadows

You can’t do this, but what you can do is apply the drop-shadow to a pseudo-element that is the same size and uses a multiply blend mode.

.above {
    position: absolute;
    background: green;
    width: 100px;
    height: 100px;
}

.above::before {
    box-shadow: 3pt 3pt 0 0 dodgerblue;
    mix-blend-mode: multiply;
    content: "";

    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
}

.below {
    position: absolute;
    top: 50px;
    left: 50px;

    width: 100px;
    height: 100px;

    background: red;
}

<div class="below">
</div>
<div class="above">
</div>

found here: https://stackoverflow.com/questions/52838406/apply-blend-mode-to-drop-shadow-only

Hello Child base CSS to use settings from panel.

/* 
Theme Name: Hello Elementor Child
Theme URI: https://github.com/elementor/hello-theme/
Description: Hello Elementor Child is a child theme of Hello Elementor, created by Elementor team
Author: Elementor Team
Author URI: https://elementor.com/
Template: hello-elementor
Version: 1.0.1
Text Domain: hello-elementor-child
License: GNU General Public License v3 or later.
License URI: https://www.gnu.org/licenses/gpl-3.0.html
Tags: flexible-header, custom-colors, custom-menu, custom-logo, editor-style, featured-images, rtl-language-support, threaded-comments, translation-ready
*/

/*
    Add your custom styles here
*/
/* Sections
 */
body {
    font-family: var(--e-global-typography-text-font-family),-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: 1rem;
    color: var(--e-global-color-text);
    background-color: transparent;
}

/* Text-level semantics
 */
a {
    background-color: transparent;
    text-decoration: none;
    color: var(--e-global-color-accent); }
a:hover, a:active {
    color: var(--e-global-color-accent); }

button,
[type="submit"],
[type="button"] {
    color: var(--e-global-color-accent);
    border: 1px solid var(--e-global-color-accent);
    }

button:hover, button:focus,
[type="submit"]:hover,
[type="submit"]:focus,
[type="button"]:hover,
[type="button"]:focus {
    background-color: var(--e-global-color-accent);
}

Center that ish

position: absolute;
top: 50%;
left: 50%;
transform: translateX(-50%) translateY(-50%);