CSS QuickStart-Basic Selector

1. Tag Selector

Element selection via tags.

 <  style  >  a  { font-size  :  10px  ; color  :  red  ;   </ Span style= "color: #800000;" >style  >  

2. *

* represents wildcards, matches any tag, even the body tag, if you set the *, the body will also apply the style.

3. #

#代表ID选择器, the ID must be unique

4,. (point)

On behalf of the class selector, class can be not unique, repeatable, multiple classes can often be seen in bootstrap, but only one ID.

<class= ' tt '><p>Test</  p></div>

Find tags under div with class TT

Div. tt {background-color:red;}

CSS QuickStart-Basic Selector