Remove `.background-size()` mixin usage

Removing deprecated LESS `.background-size()` mixin calls.

Bug: T219956
Change-Id: I48a939eae125802778d0a8822961bef826970f46

diff --git a/resources/src/mediawiki.ui/components/checkbox.less b/resources/src/mediawiki.ui/components/checkbox.less
index 08612d0..92b4b8a 100644 (file)
--- a/resources/src/mediawiki.ui/components/checkbox.less
+++ b/resources/src/mediawiki.ui/components/checkbox.less
@@ -74,7 +74,7 @@
                        background-origin: border-box;
                        background-position: center center;
                        background-repeat: no-repeat;
-                       .background-size( 0, 0 );
+                       background-size: 0 0;
                        .box-sizing( border-box );
                        position: absolute;
                        // Ensure alignment of checkbox to middle of the text in long labels, see T85241
@@ -90,7 +90,7 @@
                // Apply a checkmark on the pseudo `:before` element when the input is checked
                &:checked + label:before {
                        .background-image-svg( 'images/checkbox-checked.svg', 'images/checkbox-checked.png' );
-                       .background-size( 90%, 90% );
+                       background-size: 90% 90%;
                }
 
                &:enabled {