how to create a box in html code example
Example 1: create box in html
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
.box {
height: 50px;
width: 100px;
background-color: #555;
}
</style>
</head>
<body>
<h2>Box CSS</h2>
<div class="box"></div>
</body>
</html>
Example 2: how do i make a boxin html
<div style="width:500px;height:100px;border:1px solid #000;">This is a rectangle!</div>
Example 3: css box model
MDN (Mozilla Developer Network)
Probably the best place for an in-depth explanation of
web related technologies.
See the link below regarding the CSS BOX MODEL