How to display the check mark when choosing the checkbox?

I have a checkbox and I changed the checkbox style in a circle. Now I need when the user chooses the checkbox then I have to display the check mark.

If I remove -webkit-appearance: none; then I am getting it but my css not working.

How can I do this?

.checkbox_round {
  width: 18px;
  height: 18px;
  background-color: white;
  border-radius: 50%;
  vertical-align: middle;
  border: 1px solid #ddd;
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
}

.checkbox_round:hover {
  border-color: #000;
}

.checkbox_round:checked {
  background-color: #f00;
}

<label><input type="checkbox" name="name1" value="1" class="checkbox_round"> check box1 </label>

<label><input type="checkbox" name="name2" value="2" class="checkbox_round"> check box1 </label>

<label><input type="checkbox" name="name3" value="3" class="checkbox_round"> check box1 </label>