important property in css code example

Example 1: css important

#content ul li {
   color : red;
}

ul li {
   color : blue !important; /* overrides the red color */
}

Example 2: !important css

div {
 width: 100% !important;
}

Example 3: css !important

min-width: 100% !important;

Example 4: explain !important css

explain !important css

Example 5: important css

Hey! Using !important in your code means that you've done something wrong.
Try avoiding it as much as possible.