default-preferences pref(layout.css.contain.enabled,true) == contain-paint-clip-001.html contain-paint-clip-001-ref.html == contain-paint-clip-002.html contain-paint-clip-002-ref.html == contain-paint-clip-003.html contain-paint-clip-003-ref.html == contain-paint-clip-004.html contain-paint-clip-004-ref.html == contain-paint-clip-005.html contain-paint-clip-003-ref.html == contain-paint-containing-block-absolute-001.html contain-paint-containing-block-absolute-001-ref.html == contain-paint-containing-block-fixed-001.html contain-paint-containing-block-fixed-001-ref.html == contain-paint-formatting-context-float-001.html contain-paint-formatting-context-float-001-ref.html == contain-paint-formatting-context-margin-001.html contain-paint-formatting-context-margin-001-ref.html