Run php file when submit button in another html file

I would like to work on registration process for which with the help of Google and Youtube i have created "Sign-in & Sing-up" page togather with toggle option however unable to run registration.php file once user provide registration info at login.html file. Codes are as follows :

<form id="login" class="input-group">
    <input type="text" class="input-field" placeholder="User Id" required>
    <input type="password" class="input-field" placeholder="Enter Password" required>
    <input type="checkbox" class="check-box"><span>Remember Password</span>
    <button type="submit" class="submit-btn">Sign-In</button>
</form>

<form Id="register" class="input-group">
    <input type="text" class="input-field" placeholder="User Id" required>
    <input type="email" class="input-field" placeholder="Email Id" required>
    <input type="password" class="input-field" placeholder="Enter Password" required>
    <input type="password" class="input-field" placeholder="Confirm Password" required>
    <input type="phone-number" class="input-field" placeholder="Mobile Number" required>
    <input type="checkbox" class="check-box"><span>I agree to the terms & conditions</span>
    <button type="submit" class="submit-btn">Sign-Up</button>
</form>

How to execute registration.php file when Sign-up button clicked at login.html file? Same goes for login option too.