When to use “!important” to save the day (when working with CSS)

Question

#div p {
    color: red !important;
}
...
#div p {
    color: blue;
}

I understand how !important works, in this case the div will ren

Answer 1

!important saves the day in cases where you dont control HTML output and it renders a style='' attribute. Think ASP.NET and other frameworks.

The only way you can then change this styling is by either using javascript or marking your CSS rule as more !important.