From 6b742c459266b18e2b375b35205ce8a6c02f0452 Mon Sep 17 00:00:00 2001
From: Bradley Taunt <bt@btxx.org>
Date: Thu, 6 Jun 2024 08:05:12 -0400
Subject: Initial commit

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+# Faking 3D Elements with CSS
+
+2020-04-29
+
+Although not always practical, creating the illusion that some of your web elements are 3D can be a fun experiment. I set out to see if I was able to create such an illusion with only 2 HTML elements and as little CSS as possible.
+
+This is what I ended up creating:
+
+![Blue 3D orb made out pure CSS](/public/images/css-orb.png)
+
+[Live CodePen Example](https://codepen.io/bradleytaunt/pen/VwvzKyb)
+
+
+## The HTML
+
+Prepare for your mind to be blown:
+
+
+    <div class="main-orb">
+        <div class="inner-orb"></div>
+    </div>
+
+
+That's it - I wasn't kidding when I said we would use only 2 HTML elements. The `.main-orb` is the core shape (set to 400x400) and the `.inner-orb` is placed on top of it's parent at a slightly smaller size (360x360) - but more on that below in the CSS portion.
+
+## The CSS
+
+First we give the bigger orb element (`.main-orb`) the default styling needed to represent a 2D circle:
+
+
+    .main-orb {
+        background: linear-gradient(#fff 0%, #eee 10%, #2E86FB 50%, #1A237E 100%);
+        border-radius: 9999px;
+        height: 400px;
+        margin: 4rem auto;
+        position: relative; /* This is important for the inner orb element later */
+        width: 400px;
+    }
+
+
+Next, we include both `:before` and `:after` pseudo elements for our orb's drop shadow. You _could_ do this with a simple `box-shadow` property on the `.main-orb` itself, but I've explained in a previous post why [that's not the best approach](/blog/better-box-shadows.html).
+
+
+    /* Shared styling for both pseudo elements - Remember DRY */
+    .main-orb:before, .main-orb:after {
+        border-radius: 200px 200px 9999px 9999px;
+        bottom: -10px;
+        content:'';
+        filter: blur(20px);
+        height: 40px;
+        position: absolute;
+        z-index: -1;
+    }
+
+    /* Bigger, lighter shadow */
+    .main-orb:before {
+        background: rgba(0,0,0,0.4);
+        left: 7.5%;
+        width: 85%;
+    }
+
+    /* Smaller, darker shadow */
+    .main-orb:after {
+        background: rgba(0,0,0,0.7);
+        left: 20%;
+        width: 60%;
+    }
+
+
+With our main orb complete we can move on to the `.inner-orb` element to help bring slightly more depth to our floating ball of CSS:
+
+
+    .inner-orb {
+        background: linear-gradient(#fff 0%, #2E86FB 60%, #283593 100%);
+        border-radius: 9999px;
+        box-shadow: 0 8px 20px rgba(0,0,0,0.5);
+        height: 360px;
+        filter: blur(18px);
+        left: 20px;
+        position: absolute;
+        top: 15px;
+        width: 360px;
+    }
+
+## Poor-man's 3D elements
+
+Clearly implementing something like this will never come close to generating true 3D renders on a website, but it is a fun exercise to see how much further we can push simple CSS. Feel free to fork the above CodePen to play around with different colors and shadow placements.
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