How to make it so that when you click on a small icon in the right corner of it, a larger size is displayed. It is implemented in JavaScript

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const workItem = document.querySelectorAll('.work_items');
let datails_work = document.querySelector('.datails_work');
for(let i = 0; i < workItem.length;i++){
    workItem[i].addEventListener('click',function(){
      /////////////WHAT I MUST WRIGHT
    })
}