How to display the check mark when choosing the checkbox?

Question

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>

Answer 1

You could make a checkmark using CSS or just use a unicode checkmark. You can also just add an image, which has already been suggested.

Here are the first two possible ways:

.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 {
  position: relative;
}

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

.checkbox_round:checked:before {
  content: "✓";
  left: 3px;
  top: -2px;
  position: absolute;
}

.checkbox2:checked:before {
  content: "";
  border: 1px solid black;
  border-width: 1px 1px 0 0;
  height: 5px;
  width: 13px;
  position: absolute;
  transform: rotate(135deg);
  left: 3px;
  top: 2px;
}

<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 checkbox2"> check box1 </label>

Answer 2

You can use a background image. I suggest you an svg.

.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-image: url(https://cdns.iconmonstr.com/wp-content/assets/preview/2012/240/iconmonstr-check-mark-1.png);
  background-size: 50%;
  background-position: center center;
  background-repeat: no-repeat;
}

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