Untitled

<html>
    <head>
        <title>Automated Out-of-band Application Security Testing</title>
        <style>

.center {
    border:solid black;
    border-radius:10px;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  box-shadow:0px 2px 5px 5px lightblue;
}
#submit{
    height:50px;
    width:100px;
    border:solid gray;
    border-radius:3px;
    cursor:pointer;
    background-color:gray;
    font-size:17px;
}
#domainInput{
    border:solid gray;
    border-radius:5px;
}

h1{
    color:red;
}
</style>
    </head>

<body>
        <div class="center">
               <h1 align="center">Automated Out-of-band Application Security Testing</h1>
<form method='POST' onsubmit="mitted();" align="center" name="DomainForm">
<input type="text" name="domainInput" placeholder="Enter domain" style="width:300px;height:50px;font-size:20px;" id="domainInput"><br/><br/><br/>
<input type='submit' name='scanSubmit' value='New scan' id="submit">
</form>
</div>
<script>
    function mitted(){
       // alert("Scan pending..");


        var val = document.DomainForm.domainInput.value;
        if (/^[a-zA-Z0-9][a-zA-Z0-9-]{1,61}[a-zA-Z0-9](?:\.[a-zA-Z]{2,})+$/.test(val)) {
            alert("Valid Domain Name, pending scan..");
        } else {
            alert("Enter Valid Domain Name");
            val.domainInput.focus();
        }

    }
</script>
</body>

</html>