Merge pull request #182 from redrobot753/master

[FEATURE]Added gradient-border-with-radius snippet

snippets/gradient-border.md

@@ -0,0 +1,48 @@
+---
+title: Gradient border
+tags: visual,intermediate
+---
+
+Creates a gradient border.
+
+```html
+<div class="gradient-border">
+  <p>Gradient border!</P>
+</div>
+```
+
+```css
+.gradient-border {
+  position: relative;
+  border: solid 1px transparent;
+  border-radius: 10px;
+  background-color: #f7f7fe;
+  background-clip: padding-box;
+  margin: 8px;
+  padding: 8px 16px;
+}
+
+.gradient-border:before {
+  content: '';
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: -1;
+  margin: -1px;
+  border-radius: inherit;
+  background: linear-gradient(to bottom, #d3e7ec, #fff);
+}
+```
+
+#### Explanation
+
+- Create a block with a transparent border, relative position and a background.
+- Absolute position the `:before` pseudo-element with a gradient background and `z-index: -1`.
+- Use `top: 0`, `right: 0`, `bottom: 0`, `left: 0` to make the pseudo-element equal size to its parent element, `margin: -1px` to make it larger.
+- Use `background-clip: padding-box` to not draw the parent element's background below the border.
+
+#### Browser support
+
+- https://caniuse.com/#feat=mdn-css_properties_background_background-clip