Urgent background:none!important What does this mean_html/css_WEB-ITnose

In the process of learning CSS,
encountered the following usage.
background:none!important
and
cursor: pointer !important;

I would like to ask all the experts, what does this mean? ?

Reply to discussion (solution)

It should be that IE7 will also support: background:none; and cursor:pointer

I think it should be, use it! Important attribute style, Firefox, Opera and other browsers will recognize its priority, but IE will not recognize it! The important style, that is, these two lines of code, is for filtering IE, personal opinion!

< ;img src="a2.jpg" alt="Image description" />



Example 2: