keyframes inside media query parsing error

[aldarund]

@media screen and (min-width:701px) {
    @keyframes bounce {
        0% {
            transform: translateX(50%);
        }
        100% {
            transform: translateX(-50%);
        }
    }
}

Which is valid css produce a error by csslint

	2	2	Parsing Errors	Expected RBRACE at line 2, col 2. @keyframes bounce {	All
	10	1	Parsing Errors	Unexpected token '}' at line 10, col 1.}

[eddpascoal]

Same issue...