What you have to do for font , for example, is an apple on the body , the same for background color, font color, etc.
body{font: Verdana 38px; color: #000; background: #fff;}
Then for individual functions (e.g. margins, indents, borders, etc.) they must be defined in the class.
.classname { margin: 0px 5px 10px 5px; padding: 10px 5px 10px 6px; }
This is better for convenience and makes your HTML less messy.
I believe that in order to justify common classes you should have more than one property, otherwise you will not get anything from using CSS modularity.
those. such things are not good ideas:
.bold { font-weight: bold; }
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