Spotting Invalid Properties and Values
Youcanalsousetheelementinspectortospotinvalidpropertiesorpropertyvalues.
InChromeandOpera,invalidCSSrulesbothhavealinethroughthemandanad-
jacentwarningicon,whichcanbeseeninFigure3.7.
Figure 3.7. Spotting an invalid CSS property value using ChromeInFigure3.8,Safaristrikesthroughinvalidruleswitharedline.
Debugging and Optimization 101