Limitation for div width and hieght using CSS in ASP.Net

hi

this is html code:

<div id="aparat">
    <asp:Label ID="LblDes" runat="server" CssClass="lblPGD"></asp:Label>
</div>

I bind Lbldes from database

 LblDes.Text= _dr["Description"].ToString();

this is description cloumn's data:

<div id="14921567137600375"><script type="text/JavaScript" src="https://www.aparat.com/embed/gRamq?data[rnddiv]=14921567137600375&data[w]=640"></script></div>

it will display video(I get this code from other site)...

problem is that as you see below code:

#aparat {
    float: right;
    margin: 0 600px 0 0;
    width: 200px;
    height: 100px;
}
    

.lblPGD {
    float: right;
    width: 200px;
    height: 100px;
}

I define width and hieght for label and div but it doesn't effect to video I mean see below code:

14921567137600375&data [w]=640"

here it is automatically define 640px for width from that site and it will diplay video in 640px size but I want it will diplay it in size that I define in page(put in css)...

how I can do it?

Best regards

neda