CSS code can be written either as a ruleset in a *.css file or as an inline style within the *.html file tags. In both of these cases the core syntax is the same, consisting of a collection of declarations

property:value

The difference is that in case of a ruleset the declarations are placed inside a declaration block attached to a selector

selector {
	property:value
}

While in case of inline CSS styling the declaration becomes the value of a html style attribute inside an opening tag

<element style='value:attribute;'></element>

Examples

p {
	color: red;
	font-size: 20px;
}
<p style='color:red; font-size: 20px;'> Text </p>