<div class="cp_ipcheck05">
  <ul>
    <li class="list_item">
    <label><input type="checkbox" class="option-input05" checked />ネコ</label>
    </li>
    <li class="list_item">
    <label><input type="checkbox" class="option-input05" />イヌ</label>
    </li>
    <li class="list_item">
    <label><input type="checkbox" class="option-input05" />ウサギ</label>
    </li>
  </ul>
</div>

.cp_ipcheck05 {
  width: 90%;
  margin: 2em auto;
}
.cp_ipcheck05 ul {
  list-style: none;
}
.cp_ipcheck05 .list_item {
  margin-bottom: 10px;
}
/*ラベルの設定*/
.cp_ipcheck05 label {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
}
/*チェックボックスの設定*/
.cp_ipcheck05 .option-input05 {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 22px;
  /*デフォルト値を無効に*/
  border: none;
  outline: none;
  appearance: none;
}
.cp_ipcheck05 .option-input05::before,
.cp_ipcheck05 .option-input05::after {
  position: absolute;
  content: '';
  cursor: pointer;
}
.cp_ipcheck05 .option-input05::before {
  width: 15px;
  height: 15px;
  background: #da3c41;
  clip-path: polygon(0 70%, 5% 60%, 45% 75%, 90% 10%, 100% 20%, 50% 100%);
  transform: scale(0, 0);
  transition: all 0.4s cubic-bezier(0.45, 1.8, 0.5, 0.75);/*ぴょこんの動き*/
  z-index: 1;
}
.cp_ipcheck05 .option-input05::after {
  width: 20px;
  height: 20px;
  background: #ffffff;
  border: 2px solid #f2f2f2;
}
/*checked時の設定*/
.cp_ipcheck05 .option-input05:checked::before {
  transform: scale(1, 1);
}