I tried to get it for create a standard gradient with transparent colors etc. and nothing. Div has have blurred content for a full height. I want to have Blur 0% → Blur 100%.
If you want to apply the blur gradient to the entire page just Keep the position: fixed;, or if you want to apply this solution only to a particular div just replace position: fixed; with position: absolute; and ensure the parent div has position: relative; for proper positioning. Feel free to tweak the backdrop-filter and mask values to fit your design requirements.
@Mike_Zue By implementing above shared code you achive your desired output. Let me share you a full code.
HTML Code:
<div class="blur-bg">
<h1>Here is a blur gradient background demo</h1>
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</div>
@Mike_Zue Can you please change the position: fixed; to position: absolute; will give the output you want. Also you can review the first reply to get proper understanding regaarding this.