CodingGuidelines:HTML
HTML 코딩 스타일 가이드.
CSS Quotation Marks
Use single ('') rather than double ("") quotation marks for attribute selectors and property values.
Do not use quotation marks in URI values (url()).
Exception: If you do need to use the @charset rule, use double quotation marks—single quotation marks are not permitted.
/* Not recommended */
@import url("https://www.google.com/css/maia.css");
html {
font-family: "open sans", arial, sans-serif;
}
/* Recommended */
@import url(https://www.google.com/css/maia.css);
html {
font-family: 'open sans', arial, sans-serif;
}