diff --git a/_sass/2017/markdown/code.scss b/_sass/2017/markdown/code.scss
index 9db980344..39d31ae37 100644
--- a/_sass/2017/markdown/code.scss
+++ b/_sass/2017/markdown/code.scss
@@ -37,11 +37,11 @@
 
   // Line highlight
   .line-highlight {
-    transform: translate3d(0, 1px, 0);
+    transform: translate3d(0, 2px, 0);
     background: linear-gradient(
       to right,
-      mix($base-c, white, 5%) 25%,
-      white);
+      rgba($base-c, 0.05) 25%,
+      transparent);
   }
 
   // Line highlight ranges
diff --git a/jest.md b/jest.md
index 9097f77a9..b06b794e7 100644
--- a/jest.md
+++ b/jest.md
@@ -16,6 +16,7 @@ Testing
 ```bash
 npm install --save-dev jest babel-jest
 ```
+{: data-line="1"}
 
 ```js
 /* Add to package.json */