I have a custom page template with a form. And this form displayed in many pages using shortcode. When the user click the submit button, the user will redirect to a "Thank you" page. This thank you page is a static (created using the WP page editor) with a href. Now, when the user click that a href (found in the thank you page, he/she will redirect to the page url where the user submit the form but in the specific portion of the page where the user came from. But I don't know how to do this. Can anyone help me with this?
<form method="POST">
    <span class="icon-pp-green-ribbon"></span>
    <fieldset>
        <div class="form-group">
            <label for="customer_fname"><span class="icons-asterisk"></span> Your name:</label>
            <input type="text" name="name_first" placeholder="" required/>
        </div>
        <div class="form-group">
            <label for="customer_tsname"><span class="icons-asterisk"></span> Your surname:</label>
            <input type="text" name="name_last" placeholder="" required/>
        </div>
        <div class="form-group">
            <label for="email">Your e-mail:</label>
            <input type="email" name="email" placeholder="@"/>
        </div>
        <div class="form-group">
            <label for="phone"><span class="icons-asterisk"></span> Phone number:</label>
            <input type="text" name="phone" pattern ="^09\d{9}$" onkeypress="return isNumberKey(event)" size="11" placeholder="09" required/>
        </div>
        <div style="margin-top: 1.50em;">
            <input type="checkbox" id="utm_checked" checked style=" float: left; transform: scale(1.2);"/>
            <label for="utm_checked">I want to be occasionally notified</label>
        </div>
        <div class="form-group">
        <input type="submit" name="submit" value="Send"/>
        </div>
    </div>
</form>
 
     
     
    