/* Select all paragraphs and apply a font size */ p { font-size: 18px; }
/* Select the element with the ID "logo" and apply a width and height */ #logo { width: 100px; height: 100px; } CSS Demystified Start writing CSS with confidence
/* Select all elements with the class "header" and apply a background color */ .header { background-color: #333; color: #fff; padding: 20px; } /* Select all paragraphs and apply a font