CSS Unable to use hover effect on list ID item - css

Question

I have a Navbar that has a <li> and one of those list items have a ID of Navbar-login-btn. I am able to modify just that ID in the css, however whenever I try to use the :hover function on it; it does not work.
Is there something I am doing wrong here, because I am not sure. Any help would be nice, thank you!
Navbar.jsx:
import '../App.css';
import myAvatar from '../images/avataaars.png'
function Navbar() {
return(
<div className='Navbar-container'>
<img src={myAvatar} className='Nav-logo'/>
<ul>
<li>Home</li>
<li>About</li>
<li>Skills</li>
<li>Projects</li>
<li id='Navbar-login-btn'>Login</li>
</ul>
</div>
)
}
export default Navbar;
App.css:
.Navbar-container{
margin: 0;
width: 100%;
display: flex;
align-items: center;
position: fixed;
background-color: #fff;
box-sizing: border-box;
padding: 10px 40px 10px 40px;
}
.Nav-logo {
width: 75px;
height: auto;
}
#Navbar-login-btn {
border: 2px solid rgb(101, 201, 255);
border-radius: 20px;
color: rgb(101, 201, 255);
cursor: pointer;
}
#Navbar-login-btn:hover {
color: #fff;
background-color: rgb(101, 201, 255);
}
.Navbar-container ul{
width: 100%;
display: flex;
justify-content: space-evenly;
font-family: Russo One;
list-style: none;
gap: 40px;
}
.Navbar-container li{
padding: 10px;
}

Answer 1

First, I recommend you use a kebab-case for the CSS property.
example - navbar-container. lowercase with a hyphen.
By the way, you don't have to use an ID to grab the element you want.
you can use last-child method.
In your case:
If the Login is the last Element in the list. use this:
// for the navbar
.navbar-container{
margin: 0;
width: 100%;
display: flex;
align-items: center;
position: fixed;
background-color: #fff;
box-sizing: border-box;
padding: 10px 40px 10px 40px;
}
// for ul in the navbar
.navbar-container ul{
width: 100%;
display: flex;
justify-content: space-evenly;
font-family: Russo One;
list-style: none;
gap: 40px;
}
// for li ul in the navbar
.navbar-container ul li{
padding: 10px;
}
// for last li ul in the navbar
.navbar-container ul li:last-child {
border: 2px solid orange;
}

Answer 2

You have same background-color on #Navbar-login-btn & #Navbar-login-btn:hover
Try replacing different color on one of them
Example:
#Navbar-login-btn:hover {
color: #fff;
background-color: rgb(15 98 143);//place this new color
}
Playcode: Sample result here