CSS bottom border on navigation bar

Question

I have a navigation bar and I have added a red line at the bottom when any item in the list is hovered, but I want to move that red line below the title (e.g. "Services"), any idea how to achieve this?

I've added a small example in the codepen so you can easily inspect the HTML and CSS code

header {
  background-color: lightblue;
  padding-top: 1rem;
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

header nav {
  min-width: 50%;
}

header nav ul {
  margin: 0;
  height: 100%;
  list-style: none;
  padding-left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header li:hover {
  height: 100%;
  border-bottom: 2px solid red;
}

<header>
  <a href="/">
    <p>Whatever logo</p>
  </a>
  <nav>
    <ul>
      <li>About us</li>
      <li>Services</li>
      <li>Pricing</li>
      <li>Blog</li>
    </ul>
  </nav>
  <a href="/">CONTACT</a>
</header>

View code link

Answer 1

I think just give all list elements the same height as the header.

like this:-

header {
  background-color: lightblue;
  padding-top: 1rem;
  height: 3rem;
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

header nav {
  min-width: 50%;
  height : 100%;
}

header nav ul {
  margin: 0;
  height: 100%;
  list-style: none;
  padding-left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header li{
  height: inherit;
}

header li:hover {
  border-bottom: 2px solid red;
}

  
    

      
Whatever logo
      

        

          
About us
          
Services
          
Pricing
          
Blog
        
      
      CONTACT
    
  

Answer 2

You can fix the title height, and you can also fix the height of the navigation bar items. Also, you have an issue where the li element moves when hovered. You can also solve this problem by always adding a transparent color border to the element so that the overall height of the element does not change on hover.

This is fixed CSS

header {
  background-color: lightblue;
  position: sticky;
  display: flex;
  height: 60px;
  align-items: center;
  justify-content: space-around;
}

header nav {
  min-width: 50%;
}

header nav ul {
  margin: 0;
  height: 100%;
  list-style: none;
  padding-left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

header li {
  display: flex;
  align-items: center;
  border-bottom: 2px solid transparent;
  height: 60px;
}

header li:hover {
  border-bottom: 2px solid red;
}

https://codepen.io/swarajgk/pen/JjZewPo?editors=1100