css move div within div to the right code example

Example: how to move a div to the right using a funvtion

window.addEventListener('click', function(e){
  if (document.getElementById("ClickBox").contains(e.target)) {
    var boxxy = document.getElementById("ClickBox");
    boxxy.style.left = (boxxy.offsetLeft + 50) + 'px';
  }
});