If you stack forms on top of each other on an HTML page, you will notice that there is an automatic blank space inserted. This code will eliminate that space which will give you more freedom when designing a page with many separate forms.
<html>
<head>
<title>form test</title>
<style>
form {margin-top: -1em;}
</style>
</head>
<body>
<form method="POST" action="xxx">
Search here: <input type="text">
<input type="submit" value="search" name="B1">
</form>
<form method="POST" action="xxx">
Search there: <input type="text">
<input type="submit" value="search" name="B1">
</form>
</body>
</html>