<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
span{
display: inline-block;
width: 80px;
height: 40px;
line-height: 40px;
background-color: lightgreen;
/* margin: 5px; */
border: 1px solid #ccc;
text-align: center;
}
</style>
</head>
<body>
<div></div>
<script>
var div = document.getElementsByTagName('div')[0];
for(var i=1;i<=9;i++){
for(var j=1;j<=i;j++){
div.innerHTML += "<span>"+i+"*"+j+"="+i*j+"</span>"
}
div.innerHTML += "</br>"
</script>
</body>
</html>