Change body background color in an iframe using one css file

Question

Using a iframe where I call a site from my webspace, Using one css file with body {background-color: #222}.

The iframe src also use this CSS file. The P

Answer 1

using Javascript We can add Background Color to Iframe

 var x = document.getElementById("myframe");
    var y = (x.contentWindow || x.contentDocument);
    if (y.document)y = y.document;
    y.body.style.backgroundColor = "red";

Reference w3schools