box-shadow bugs

#first{ box-shadow: 5px 0px 5px rgba(0,0,0,.1) inset; }

#second{ box-shadow: 5px 0px 5px rgba(0,0,0,.1); }

#third{ box-shadow: 5px 0px 5px rgba(0,0,0,0.1); }

#fourth{ box-shadow: 5px 0px 5px rgb(0,0,0); }

#fifth{ box-shadow: 5px 0px 5px rgb(0,0,0) inset; }

#sixth{ box-shadow: 5px 0px 5px rgb(255,255,255) inset; }

#seventh{ box-shadow: 5px 0px 5px #000 inset; }

#eighth{ box-shadow: 5px 0px 5px #000000 inset; }

#ninth{ box-shadow: 5px 5px 5px rgb(0,0,0) inset; }

#tenth{ box-shadow: 5px 5px rgb(0,0,0,) inset; }

#eleventh{ box-shadow: 5px 5px #000 inset; }

#twelfth{ box-shadow: 5px 5px #000000 inset; }

All of the above code is treated as invalid. The problems seem to be in the rgba color values and in the inset value. Rgba values work fine elsewhere, such as in background-color.