Why am I Unable to access CSS for Href-CodePudding

Im attempting to get the Href information from the following site using Power query:

https://hpvchemicals.oecd.org/ui/SIDS_Details.aspx?id=fc1ced8a-ce14-45fa-b003-dfeda5e38075

As per the page I wish to obtain the href for the 50000.pdf link.

Inspecting the page this should be: handler.axd?id=fae8d1b1-406b-4287-8a05-f81aa1b16d3f

However attempting this in Power query this appears to be ommited from the text:

M Code:

let
    
    Source = Table.FromColumns({Lines.FromBinary(Web.Contents("https://hpvchemicals.oecd.org/ui/SIDS_Details.aspx?id=fc1ced8a-ce14-45fa-b003-dfeda5e38075"))})
in
    Source

My question is why does this happen? I dont think it can be solved (if so great) but Im still interested to understand whats going on here.

CodePudding user response：

It is using an iframe. Try this.

let
    
    Source = Table.FromColumns({Lines.FromBinary(Web.Contents("https://hpvchemicals.oecd.org/ui/SidsOrganigrame.aspx?SIDSNo=fc1ced8a-ce14-45fa-b003-dfeda5e38075&id=000c31fa-483a-4e5b-a8bb-c26c3148e464&Key=1c143ab1-b132-4b57-b34d-559b07c845f2&Idx=0"))}),
    #"Filtered Rows" = Table.SelectRows(Source, each [Column1] = "                        <img src=""images/FiletypeIcone/htm.png"" height=""16"" width=""16"" border=""0"" />&nbsp;<a href=""http://www.chem.unep.ch/irptc/sids/OECDSIDS/sidspub.html"" target=""new"">SIAR published by UNEP</a><br /><img src=""images/FiletypeIcone/pdf.ico"" height=""16"" width=""16"" border=""0"" />&nbsp;<a href=""handler.axd?id=5525377e-1442-43d0-8c76-f8cacfadf8bb"" target=""new"">FORMALDEHYDE_50000.pdf</a><br />")
in
    #"Filtered Rows"