Radzen speceficity

Hi im trying to understand radzen specificity. If i want to style a radzen element with my own styles do i really need to use !important all the time ? changing the order in app.razor file seems to do nothing. Only thing that works is either inline style or using !important on everything in app.css file/ tag.

<link rel="stylesheet" href="app.css" />
<link rel="stylesheet" href="css/hf-design.css" />
<link rel="stylesheet" href="bootstrap/bootstrap.min.css" />
<link rel="stylesheet" href="SP.Integrasjonslisten.styles.css" />