Try it Editor: overflow: auto

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<!DOCTYPE html>
<html>
<head>
<style>
div {
    background-color: #eee;
    width: 200px;
    height: 50px;
    border: 1px dotted black;
    overflow: auto;
}
</style>
</head>
<body>

<h2>CSS Overflow</h2>
<p>The auto value is similar to scroll, only it add scrollbars when necessary:</p>

<div>You can use the overflow property when you want to have better control of the layout. The overflow property specifies what happens if content overflows an element's box.</div>

</body>
</html>
Result :