SideBySide stripes use "background-attachment: fixed;"

So I give up, non-fixed stripes always may be unaligned.

Signed-off-by: Jack Cherng <[email protected]>

Author: jfcherng

example/diff-table.css

@@ -78,7 +78,7 @@
 }
 .diff-wrapper.diff.diff-html .change.change-ins .old, .diff-wrapper.diff.diff-html .change.change-del .new, .diff-wrapper.diff.diff-html .change.change-rep .old:empty, .diff-wrapper.diff.diff-html .change.change-rep .new:empty {
   cursor: not-allowed;
-  background: repeating-linear-gradient(-45deg, whitesmoke, whitesmoke 0.5em, #e8e8e8 0.5em, #e8e8e8 0.9em);
+  background: repeating-linear-gradient(-45deg, whitesmoke, whitesmoke 0.5em, #e8e8e8 0.5em, #e8e8e8 0.9em) fixed;
 }
 .diff-wrapper.diff.diff-html .change .old {
   background: #fbe1e1;

example/diff-table.scss

@@ -130,8 +130,7 @@
           $bg-color-nonexistent-block 0.5em,
           $bg-color-nonexistent-block-alternative 0.5em,
           $bg-color-nonexistent-block-alternative 0.9em,
-        );
-        // background-attachment: fixed;
+        ) fixed;
       }
 
       .old {