We can create simple pop up form using popup maker and contact 7 plugin
Here is the demo
5 . Click on add new trigger button on same page and create new on click trigger like below with class name .popup_form
6. Then click on add and publish
7 . You can copy and paste this code code to any where like post , page or widget then save and check the page , click on this button it will popup the form like demo
- install contact7 plugin and activate
- copy the default short code



<button class="popup_form">click me for pop up form</button>