function addEdu(){
 document.getElementById('edu').insertAdjacentHTML('beforeend',
 `<input name="degree[]" placeholder="Degree">
  <input name="institution[]" placeholder="Institution">
  <input name="year[]" placeholder="Year"><hr>`);
}
function addFell(){
 document.getElementById('fell').insertAdjacentHTML('beforeend',
 `<input name="title[]" placeholder="Title">
  <input name="body[]" placeholder="Body">
  <input name="level[]" placeholder="Level"><hr>`);
}