Following is the code to produce vertical button group using CSS −
Example
<!DOCTYPE html>
<html>
<style>
*,*::before,*::after{
box-sizing: border-box;
}
.btnGroup{
display: inline-block;
font-size: 0;
border: 2px solid darkgreen;
box-shadow: 5px 10px 18px rgb(55, 173, 39);
}
button{
display: block;
width: 100%;
margin:0px;
border:none;
padding: 15px;
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
font-weight: bold;
font-size: 20px;
}
button:not(:last-child){
border-bottom: 2px solid rgb(6, 134, 49);
}
button:hover{
background:rgb(48, 24, 134);
box-shadow: 5px 10px 18px rgb(41, 39, 173);
color:white;
}
</style>
<body>
<h1>Button Group</h1>
<div class="btnGroup">
<button>Facebook</button>
<button>Twitter</button>
<button>LinkedIn</button>
</div>
<h2>Hover over the above button group to see hover effects</h2>
</body>
</html>Output
The above code will produce the following output −

On hovering above any of the buttons −
