Özel Onay Kutusu

<style>
.custom-checkbox {
  display: block;
  position: relative;
  padding-left: 35px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 16px;
  user-select: none;
}

.custom-checkbox input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 25px;
  width: 25px;
  background-color: #eee;
  border-radius: 4px;
  transition: all 0.3s;
}

.custom-checkbox:hover input ~ .checkmark {
  background-color: #ccc;
}

.custom-checkbox input:checked ~ .checkmark {
  background-color: #2196F3;
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.custom-checkbox input:checked ~ .checkmark:after {
  display: block;
}

.custom-checkbox .checkmark:after {
  left: 9px;
  top: 5px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}
</style>

<label class="custom-checkbox">
  Şartları kabul ediyorum
  <input type="checkbox">
  <span class="checkmark"></span>
</label>

<label class="custom-checkbox">
  Beni hatırla
  <input type="checkbox">
  <span class="checkmark"></span>
</label>