Change the input color of the text & placeholder on focus [SASS]

styles.css

.css-input {
	color: $white;
	
	&:focus {
	    color: $black;
	}
	
	&::-webkit-input-placeholder {
	    color: $white;
	}
	&:focus::-webkit-input-placeholder {
	    color: $black;
	}
	
	/* Firefox < 19 */
	&:-moz-placeholder {
	    color: $white;
	}
	&:focus:-moz-placeholder {
	    color: $black;
	}
	
	/* Firefox > 19 */
	&::-moz-placeholder {
	    color: $white;
	}
	&:focus::-moz-placeholder {
	    color: $black;
	}
	
	/* Internet Explorer 10 */
	&:-ms-input-placeholder {
	    color: $white;
	}
	&:focus:-ms-input-placeholder {
	    color: $black;
	}
}