Progressive blur

Skill nota-america/forgecat-agent-profiles/profiles/mengto/skills/mango_skills_agent-skills-web-design/for-forgecat/skills/progressive-blur

Create a layered CSS progressive blur (top or bottom) using multiple backdrop-filter masks for depth and softness. Use when asked for “progressive blur”, “gradient blur overlay”, or stepped blur masks that fade from an edge of the viewport.From its SKILL.md

Install

npx -y skills add nota-america/forgecat-agent-profiles --skill progressive-blur

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

SKILL.md

5.9 KB, ~2.3k tokens by cl100k_base, as published. Nobody here has run it

Progressive Blur Skill

Workflow

Confirm placement (top or bottom), height, and z-index relative to UI.
Provide the matching snippet and a short usage checklist.
Offer only targeted tweaks (height, blur steps, direction, opacity stops).

Usage checklist

Insert the HTML inside <body>.
Keep the .gradient-blur element near the top of the DOM.
Ensure the background behind it exists (backdrop-filter blurs what is behind).
Adjust z-index to sit above content but below modals.

Top blur (from top)

<div class="gradient-blur">
  <div></div><div></div><div></div><div></div><div></div><div></div>
</div>
<style>
  .gradient-blur {
    position: fixed;
    z-index: 5;
    inset: 0 0 auto 0;
    height: 12%;
    pointer-events: none;
  }

  .gradient-blur > div,
  .gradient-blur::before,
  .gradient-blur::after {
    position: absolute;
    inset: 0;
  }

  .gradient-blur::before {
    content: "";
    z-index: 1;
    backdrop-filter: blur(0.5px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 1) 12.5%,
      rgba(0, 0, 0, 1) 25%,
      rgba(0, 0, 0, 0) 37.5%);
  }

  .gradient-blur > div:nth-of-type(1) {
    z-index: 2;
    backdrop-filter: blur(1px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 12.5%,
      rgba(0, 0, 0, 1) 25%,
      rgba(0, 0, 0, 1) 37.5%,
      rgba(0, 0, 0, 0) 50%);
  }

  .gradient-blur > div:nth-of-type(2) {
    z-index: 3;
    backdrop-filter: blur(2px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 25%,
      rgba(0, 0, 0, 1) 37.5%,
      rgba(0, 0, 0, 1) 50%,
      rgba(0, 0, 0, 0) 62.5%);
  }

  .gradient-blur > div:nth-of-type(3) {
    z-index: 4;
    backdrop-filter: blur(4px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 37.5%,
      rgba(0, 0, 0, 1) 50%,
      rgba(0, 0, 0, 1) 62.5%,
      rgba(0, 0, 0, 0) 75%);
  }

  .gradient-blur > div:nth-of-type(4) {
    z-index: 5;
    backdrop-filter: blur(8px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 50%,
      rgba(0, 0, 0, 1) 62.5%,
      rgba(0, 0, 0, 1) 75%,
      rgba(0, 0, 0, 0) 87.5%);
  }

  .gradient-blur > div:nth-of-type(5) {
    z-index: 6;
    backdrop-filter: blur(16px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 62.5%,
      rgba(0, 0, 0, 1) 75%,
      rgba(0, 0, 0, 1) 87.5%,
      rgba(0, 0, 0, 0) 100%);
  }

  .gradient-blur > div:nth-of-type(6) {
    z-index: 7;
    backdrop-filter: blur(32px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 75%,
      rgba(0, 0, 0, 1) 87.5%,
      rgba(0, 0, 0, 1) 100%);
  }

  .gradient-blur::after {
    content: "";
    z-index: 8;
    backdrop-filter: blur(64px);
    mask: linear-gradient(to top,
      rgba(0, 0, 0, 0) 87.5%,
      rgba(0, 0, 0, 1) 100%);
  }
</style>

Bottom blur (from bottom)

<div class="gradient-blur">
  <div></div><div></div><div></div><div></div><div></div><div></div>
</div>
<style>
  .gradient-blur {
    position: fixed;
    z-index: 5;
    inset: auto 0 0 0;
    height: 65%;
    pointer-events: none;
  }

  .gradient-blur > div,
  .gradient-blur::before,
  .gradient-blur::after {
    position: absolute;
    inset: 0;
  }

  .gradient-blur::before {
    content: "";
    z-index: 1;
    backdrop-filter: blur(0.5px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 1) 12.5%,
      rgba(0, 0, 0, 1) 25%,
      rgba(0, 0, 0, 0) 37.5%);
  }

  .gradient-blur > div:nth-of-type(1) {
    z-index: 2;
    backdrop-filter: blur(1px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 12.5%,
      rgba(0, 0, 0, 1) 25%,
      rgba(0, 0, 0, 1) 37.5%,
      rgba(0, 0, 0, 0) 50%);
  }

  .gradient-blur > div:nth-of-type(2) {
    z-index: 3;
    backdrop-filter: blur(2px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 25%,
      rgba(0, 0, 0, 1) 37.5%,
      rgba(0, 0, 0, 1) 50%,
      rgba(0, 0, 0, 0) 62.5%);
  }

  .gradient-blur > div:nth-of-type(3) {
    z-index: 4;
    backdrop-filter: blur(4px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 37.5%,
      rgba(0, 0, 0, 1) 50%,
      rgba(0, 0, 0, 1) 62.5%,
      rgba(0, 0, 0, 0) 75%);
  }

  .gradient-blur > div:nth-of-type(4) {
    z-index: 5;
    backdrop-filter: blur(8px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 50%,
      rgba(0, 0, 0, 1) 62.5%,
      rgba(0, 0, 0, 1) 75%,
      rgba(0, 0, 0, 0) 87.5%);
  }

  .gradient-blur > div:nth-of-type(5) {
    z-index: 6;
    backdrop-filter: blur(16px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 62.5%,
      rgba(0, 0, 0, 1) 75%,
      rgba(0, 0, 0, 1) 87.5%,
      rgba(0, 0, 0, 0) 100%);
  }

  .gradient-blur > div:nth-of-type(6) {
    z-index: 7;
    backdrop-filter: blur(32px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 75%,
      rgba(0, 0, 0, 1) 87.5%,
      rgba(0, 0, 0, 1) 100%);
  }

  .gradient-blur::after {
    content: "";
    z-index: 8;
    backdrop-filter: blur(64px);
    mask: linear-gradient(to bottom,
      rgba(0, 0, 0, 0) 87.5%,
      rgba(0, 0, 0, 1) 100%);
  }
</style>

Customization knobs

Direction: flip to top ↔ to bottom.
Height: adjust .gradient-blur height percentage.
Strength: change blur values (0.5px → 64px).
Steps: add/remove layers to control smoothness.

Common pitfalls

backdrop-filter needs content behind it; it will not blur a flat background.
High blur values are GPU-heavy; reduce steps on low-end devices.
Ensure pointer-events: none stays to avoid blocking clicks.

Questions to ask when specs are missing

Should the blur start from the top or bottom?
How tall should the blur area be?
Is performance a concern on lower-end devices?

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.