javascript
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.text {
display: inline-block;
cursor: pointer;
font-size: 28px;
padding: 40px 60px;
border: 1px solid red;
}
.text:focus {
color: aqua;
}
</style>
</head>
<body>
<div id="box">
<div class="text" tabIndex="1">1</div>
<div class="text" tabIndex="1">2</div>
<div class="text" tabIndex="1">3</div>
<div class="text" tabIndex="1">4</div>
<div class="text" tabIndex="1">5</div>
<div class="text" tabIndex="1">6</div>
<div class="text" tabIndex="1">7</div>
</div>
</body>
</html>