Merge pull request #113 from FarkasJanos/ghost-trick --force-build

Add ghost trick snippet

snippets/ghost-trick.md

@@ -0,0 +1,46 @@
+### Ghost trick
+
+Vertically centers an element in another.
+
+#### HTML
+
+```html
+<div class="ghost-trick">
+  <div class="ghosting">
+    <p>Vertically centered without changing the position property.</p>
+  </div>
+</div>
+```
+
+#### CSS
+
+```css
+.ghosting {
+  height: 300px;
+  background: #0ff;
+}
+
+.ghosting:before {
+  content: "";
+  display: inline-block;
+  height: 100%;
+  vertical-align: middle;
+}
+
+p {
+  display: inline-block;
+  vertical-align: middle;
+}
+```
+
+#### Demo
+
+#### Explanation
+
+Use the style of a `:before` pseudo-element to vertically align inline elements without changing their `position` property.
+
+#### Browser support
+
+- https://caniuse.com/#feat=inline-block
+
+<!-- tags: layout -->