WebChecker HTML, CSS and php

----------------------------------------------------------------HTML-------------------------------------------------------------------
<html>
<head>
<link rel="stylesheet" href="style.css">
<title>
Website Checker
</title>
</head>
<script>
function Check(form)
{
    var x=form.Website.value;
    //alert(x);
    window.open(x);
}
</script>
<body>
    <form method="POST" action="websitecheck.php">
        Website:<br>
        <input type="Text" name="Website"><br>
        <input type="Submit" name="Sub1" value="Search" Onclick="Check(this.form)">
    </form>
</body>
</html>

-----------------------------------------------------------CSS-------------------------------------------------------------------------
input[type=text], select
{
    width: 75%%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
input[type=submit] {
    width: 50%%;
    background-color: #0099ff;
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
------------------------------------------------------------Php------------------------------------------------------------------------
<?php
$servername="10.10.81.61";
$username="root";
$pass="Adroit098";
$dbname="website";


$query= mysqli_connect($setvername,$username,$pass,$dbname);

if (!$query) {
    die("Connection failed: " . mysqli_connect_error());
}
else
{
    echo "Connection made";
}

?>