1. selector {style-name:value units;} </style>
CSS Format
style-name:value units; style-name:part part part;
<style>
selector {style-name:value units;}
</style>
<tagname style="style-name:value units;">content</tagname>
CSS styles are written with style-name : style value ;
The style name is usually written in full and a dash is used if there are two words. The value has units if a number, for instance: 10px for pixels, 80% for percent, 2em for ems.
These go on the tag in a style parameter or in <style> tags.