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+# Animated Radio Tab Toggles
+
+2021-01-05
+
+*In this demo tutorial, we are making the assumption* that we need to create a radio slide toggle for our made-up payment options. For this we want to display 3 simple payment choices to the user:
+
+- One-time payment
+- Recurring payment
+- Free tier payment
+
+## The Final Demo
+
+[Live CodePen](https://codepen.io/bradleytaunt/embed/vYXjpLO)
+
+Let’s get started with the base skeleton.
+
+## The HTML
+
+<p>There isn't anything special happening here. We just contain all our <code>labels</code> and <code>inputs</code> into a <code>.radio-toggles</code> wrapper, make sure those <code>labels</code> are each properly connected to their corresponding <code>inputs</code>, and then add an empty <code>.slide-item</code> element (more on that later).</p>
+
+
+    <div class="radio-toggles">
+        <input type="radio" id="option-1" name="radio-options">
+        <label for="option-1">One-Time</label>
+        <input type="radio" id="option-2" name="radio-options" checked>
+        <label for="option-2">Recurring</label>
+        <input type="radio" id="option-3" name="radio-options">
+        <label for="option-3">Free</label>
+        <div class="slide-item"></div>
+    </div>
+
+
+## The CSS
+
+Now for the main event – the CSS. First we want to style the wrapper that holds all of our pieces together. You can tweak this to your liking, but I prefer a simple and clean style:
+
+
+    .radio-toggles {
+        align-items: center;
+        background: #eee;
+        border: 1px solid lightgrey;
+        border-radius: 9999px;
+        display: flex;
+        justify-content: center;
+        margin: 20px auto;
+        max-width: 400px;
+        overflow: hidden;
+        padding: 4px;
+        position: relative;
+    }
+
+
+Next, we “hide” (only visually) the default `radio` inputs:
+
+
+    input[type="radio"] {
+        left: -9999px;
+        position: absolute;
+        z-index: -1;
+    }
+
+
+Then we give the corresponding `label` elements a little spacing and breathing room:
+
+
+    label {
+        cursor: pointer;
+        padding: 10px 20px;
+        text-align: center;
+        width: 33.33%;
+        z-index: 2;
+    }
+
+
+Remember that `.slide-item` I referenced earlier? That element will be the visual “slider” that animates between the individual radio options. We style that like so:
+
+
+    .slide-item {
+        background: white;
+        border-radius: 9999px;
+        box-shadow: 0 2px 4px rgba(0,0,0,0.15);
+        height: calc(100% - 8px);
+        left: calc(33.33% + 4px);
+        position: absolute;
+        width: calc(33.33% - 8px);
+        transition: left .4s;
+        z-index: 0;
+    }
+
+
+You'll notice the `left`, `height`, and `width` properties utilize the CSS `calc` attributes – this just gives some much needed padding and visual clean-up to the whole tabbed interface.
+
+For the finishing touches, we just need to tell the `.slide-item` where to position itself based on which `radio` input is currently selected:
+
+
+    input[type="radio"]:nth-of-type(1):checked ~ .slide-item {
+        left: 4px;
+    }
+    input[type="radio"]:nth-of-type(3):checked ~ .slide-item {
+        left: calc(66.66% + 4px);
+    }
+
+
+That's pretty much it! You now have a fully functional, animated toggle slider with just a set of simple `radio` inputs and pure CSS.
+
+
+