Remove position:relative.

sky/engine/core/css/parser/BisonCSSParser-in.cpp

Index: sky/engine/core/css/parser/BisonCSSParser-in.cpp
diff --git a/sky/engine/core/css/parser/BisonCSSParser-in.cpp b/sky/engine/core/css/parser/BisonCSSParser-in.cpp
index 34431d248b726ce4b9670ff6d6269536fa8e3a9d..ae8665480d5aeeb97a44fdff551e6371afb3e773 100644
--- a/sky/engine/core/css/parser/BisonCSSParser-in.cpp
+++ b/sky/engine/core/css/parser/BisonCSSParser-in.cpp
@@ -376,8 +376,8 @@ bool isValidKeywordPropertyAndValue(CSSPropertyID propertyId, CSSValueID valueID
         // none | visiblePainted | visibleFill | visibleStroke | visible |
         // painted | fill | stroke | auto | all | bounding-box
         return valueID == CSSValueVisible || valueID == CSSValueNone || valueID == CSSValueAll || valueID == CSSValueAuto || (valueID >= CSSValueVisiblepainted && valueID <= CSSValueBoundingBox);
-    case CSSPropertyPosition: // static | relative | absolute | fixed
-        return valueID == CSSValueStatic || valueID == CSSValueRelative || valueID == CSSValueAbsolute || valueID == CSSValueFixed;
+    case CSSPropertyPosition: // static | absolute
+        return valueID == CSSValueStatic || valueID == CSSValueAbsolute;
     case CSSPropertySpeak: // none | normal | spell-out | digits | literal-punctuation | no-punctuation
         return valueID == CSSValueNone || valueID == CSSValueNormal || valueID == CSSValueSpellOut || valueID == CSSValueDigits || valueID == CSSValueLiteralPunctuation || valueID == CSSValueNoPunctuation;
     case CSSPropertyTableLayout: // auto | fixed