CSS로 분할 버튼 드롭다운을 만드는 방법은 무엇입니까?

다음은 CSS로 분할 버튼 드롭다운을 만드는 코드입니다 −

예시

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<style>
body {
   font-family: "Lucida Sans", "Lucida Sans Regular", "Lucida Grande",
"Lucida Sans Unicode", Geneva, Verdana, sans-serif;
}
button {
   background-color: rgb(18, 5, 95);
   color: white;
   padding: 16px;
   font-size: 20px;
   font-weight: bolder;
   font-family: monospace, sans-serif;
   border: none;
   outline: none;
}
.dropMenu {
   position: absolute;
   display: inline-block;
}
.dropMenu button {
   border-left: 1px solid #0d8bf2;
}
.dropContent {
   display: none;
   position: absolute;
   background-color: #f1f1f1;
   min-width: 160px;
   z-index: 1;
}
.dropContent a {
   color: black;
   background-color: rgb(184, 253, 255);
   font-size: 18px;
   font-weight: bold;
   padding: 12px 16px;
   text-decoration: none;
   display: block;
}
.dropContent a:hover {
   background-color: rgb(48, 0, 110);
   color: white;
}
.dropMenu:hover .dropContent {
   display: block;
}
.btn:hover,
.dropMenu:hover .btn {
   background-color: #0b7dda;
}
</style>
</head>
<body>
<h1>Split Button dropMenu Example</h1>
<button>Button</button>
<div class="dropMenu">
<button>
>>
</button>
<div class="dropContent">
<a href="#">First Link</a>
<a href="#">Second Link</a>
<a href="#">Third Link</a>
</div>
<h1>Hover over '>>' to open dropMenu menu</h1>
</body>
</html>