CSS inline-block won't show up in a browser as link

Question

I'm trying to style my link with black background, using the code below:

a#link-1: link{
    background: black;
    padding: 20px;
}

However; it won't show up on the browser!

Please, check it out. This is the entire code

Answer 1

Is that the effect you want ?

https://jsfiddle.net/ehc5skbv/2/

a#link-1 {
    background: #333;
    padding: 10px;
       
}