Để tạo thông báo chú thích bằng CSS, mã như sau -
Ví dụ
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif}
.callout {
position: fixed;
bottom: 35px;
right: 20px;
margin-left: 20px;
max-width: 300px;
}
.calloutHeading {
padding: 25px 15px;
background: rgb(68, 93, 235);
font-size: 30px;
color: white;
}
.calloutMessage {
padding: 15px;
background-color: #ccc;
color: black
}
.close {
position: absolute;
top: 5px;
right: 15px;
color: white;
font-size: 30px;
cursor: pointer;
}
.close:hover {
color: lightgrey;
}
</style>
</head>
<body>
<h1>Callout Message Example</h1>
<h3>Product 2</h3>
<h3>Product 3</h3>
<h3>Product 4</h3>
<div class="callout">
<div class="calloutHeading">Check our offers</div>
<span class="close" onclick="this.parentElement.style.display='none';">×</span>
<div class="calloutMessage">
<p>Before you leave this page don't forget to check our other offers <a href="#">Check
Them</a></p>
</div>
</div>
</body>
</html> Đầu ra
Đoạn mã trên sẽ tạo ra kết quả sau -
