<!DOCTYPE html>
<html>
<head>
<style>
#b {
border: 1px solid red;
width: 50px;
height: 50px;
float: inline-start;
}
#c {
border: 1px solid blue;
width: 50px;
height: 50px;
float: inline-end;
}
</style>
</head>
<body>
<div id=b></div>
<div id=c></div>
</body>
</html>