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+### Last item with all available height
+
+Avoid vertical scrollbar and take advantage of current viewport space. Given the last element with all available space in current viewport, even when resizing window.
+
+#### HTML
+
+```html
+<div class="container">
+  <div>Div 1</div>
+  <div>Div 2</div>
+  <div>Div 3</div>
+</div>
+```
+
+#### CSS
+
+```css
+html,
+body {
+  height: 100%;
+  margin: 0;
+}
+
+.container {
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+}
+
+.container > div:last-child {
+  background-color: #333;
+  flex: 1;
+}
+```
+
+#### Demo
+
+<div class="snippet-demo">
+    <div class="snippet-demo__last-time-with-all-available-height">
+        <div>Div 1</div>
+        <div>Div 2</div>
+        <div>Div 3</div>
+    </div>
+</div>
+
+<style>
+.snippet-demo__last-time-with-all-available-height {
+  height: 300px;
+  display: flex;
+  flex-direction: column;
+}
+
+.snippet-demo__last-time-with-all-available-height > div:last-child {
+  background-color: #333;
+  flex-grow: 1;
+  color: white;
+}
+</style>
+
+#### Explanation
+
+1. `height: 100%` set the height of container as viewport height
+2. `display: flex` enables flexbox.
+3. `flex-direction: column` set the direction of flex items' order from top to down
+4. `flex-grow: 1` the flexbox will apply remaining available space of container to last child element.
+
+The parent must have a viewport height. `flex-grow: 1` could be applied to the first or second element, which will have all available space.
+
+#### Browser support
+
+<span class="snippet__support-note">⚠️ Needs prefixes for full support.</span>
+
+- https://caniuse.com/#feat=flexbox
+
+<!-- tags: layout -->