See code below.
I have not explicitly set background-color on html parent, so why does it get bg color of its child ?!
/* uncomment to see
html {
background-color:orange;
}*/
body {
background-color:hotpink;
border: 1px dashed red;
}<html>
<body>
body<br/>
<p> hey some random para</p>
</body>
</html>