How can i change border iner color

Question

It might help , a lot

Answer 1

For a green border with an orange inner color you need the code below. I used it on the whole body tag.

body {
border: 5px solid green;
background-color: orange;
}

Try it!

Answer 2

border inner color? Can you clear your question properly so community can help you

Answer 3

by looking at _F1_ answer i figured out your question you can also try:
<div></div>

div{
height:20px;
width:50px;
background-color: yellow;
box-shadow: -5px 0 black, 0 5px black, 5px 0 black, 0 -5px black;
border:4px solid green;
}

Answer 4

background-color:orange; atleast try it (didnt understand the Q to 100%)