スタンプアニメーションを実装しよう

解答ソースコード

              <section class="stamp-wrap">
  <input type="checkbox" id="stamp">
  <label for="stamp">押下して下さい</label>

  <div class="stamp-box">
    <div class="test">
      <span>忍者</span>
    </div>
  </div>
</section>
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              input {
    display: none;
}
.stamp-box {
    display: inline-flex;
    align-items: center;
    width: 80px;
    height: 80px;
    border: 1px solid;
}
.test {
    position: relative;
    display: inline-block;
    vertical-align: middle;
    background-color: #E4007F;
    width: 50px;
    height: 50px;
    margin: auto;
    border: 1px solid #E4007F;
    border-radius: 50%;
    color: #000;
    visibility: hidden;
    opacity: .0;
    -webkit-transform: scale(10) rotate(-30deg);
    transform: scale(10) rotate(-30deg);
    transition: all 0.5s ease-in 0s;
}
input:checked ~ .stamp-box > .test {
    visibility: visible;
    opacity: 1.0;
    -webkit-transform: scale(1) rotate(0deg);
    transform: scale(1) rotate(0deg);
}
span {
    position: absolute;
    width: 2em;
    font-weight: bold;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
¥CSS¥