Update XmlReportStyles.css

[Jvr2022]

Added missing quotes around font names in the font-family property.

Added a missing unit (px) to the font-size property for .code.

Fixed the position property values for #header and #main to fixed instead of absolute for a more stable layout.

Added a text-decoration property with a line-through value for the .ignore class to strike through ignored elements.

Added styles for matching elements using the .match class.

Added styles for added elements using the .add class.

Added styles for moved elements using the .moveto and .movefrom classes.

Added styles for removed elements using the .remove class.

Added styles for changed elements using the .change class.