JSFiddle - React, Tailwind, and code Playground
HTML
<div id="item-header" role="complementary" data-bp-item-id="1" data-bp-item-component="members" class="users-header single-headers has-bp-cover">
<div id="cover" style="background:#cccccc;">
<div id="item-header-wrappper">
</div><!-- #item-header-wrapper -->
</div><!-- #cover -->
</div><!-- #item-header -->
CSS
.single-headers #cover { height: 450px; overflow:auto; background-position: center center; position: relative; }
.single-headers #cover::after { content: " "; position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; }
#cover-image-container { position: relative;}
.single-headers #cover::after { background: linear-gradient(0deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.6) 11%, rgba(0,0,0,0) 100%); }