<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
div {
width: 10px;
min-width: 70%;
background-color: #1c87c9;
color: #ffffff
}
</style>
</head>
<body>
<div>The min-width of this text is defined as 70%.</div>
</body>
</html>