CSS validator tells me I have errors in my CSS but I can't figure out why.

body { background-color: #666666; background-image: linear-gradient (to bottom, #ffffff, #666666); background-repeat: no-repeat; font-family: Arial, Helvetica, sans-serif; margin-left: 0px; margin-right: 0px; margin-top: 0px; margin-bottom: 0px; }

#container { width: 960px; padding: 20px; margin-left: auto; margin-right: auto; background-color: white; box-shadow: 5px, 5px, 5px, #1e1e1e; border-radius: 15px; }

header { background-image: url(background.jpg); hight: 150px; border: 1px #000; border-radius: 15px; }

h1 { font-family: Impact, sans-serif; font-size: 4em; padding: 1em; color: hsla(0, 0%, 0%, 0.2); }

h2 { font-family: Impact, courier-new; font-size: 1em; text-shadow: 3px, 2px, 5px, #666; } .photo { float: right; }

footer { border-top: thin solid; text-align: right; font-size: .8em; font-style: italic; }

errors:

11

	body	Value Error : background-image linear-gradient is not a background-image value : linear-gradient
11	body	Parse Error (to bottom, #ffffff, #666666);
13	Helvetica, sans-serif	Parse Error [: no-repeat; font-family: Arial]
13	Helvetica, sans-serif	Parse Error sans-serif;
19		Parse Error [: 0px; margin-right: 0px; margin-top: 0px; margin-bottom: 0px; } #container]
28	header	Property hight doesn't exist : 150px
39	h2	Value Error : text-shadow Too many values or values are not recognized : 3px,2px,5px,#666