q14255395859

https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q14255395859

by take0844

HTML

<p>チェックボックスにチェックを入れる</p>
<div class="privacy">
  <div class="checkbox">
    <div class="check">
      <label>
        <input id="agree" name="term" required="" type="checkbox" value="">プライバシーポリシーに同意する
      </label>
    </div><!-- /.check -->
  </div><!-- /.policy -->
</div><!-- /.privacy -->

CSS

.checkbox {
  
  justify-content: center;
  align-items: center;
  padding-top: 32px;
}

#agree {
  position: relative;
  width: 20px;
  height: 20px;

  margin: 0;
  padding: 0;
  background: none;
  border: none;
  border-radius: 0;
  outline: none;
  appearance: none;
  margin-right: .6em;
}

#agree::before {
  background: #fff;
  border: 1px solid #707070;
  content: '';
  display: block;
  width: 20px;
  height: 20px;
  left: 0;
  margin-top: -6px;
  position: absolute;
  top: 8px;
}

#agree::after {
  border-right: 2px solid #B8860BEA;
  border-bottom: 2px solid #B8860BEA;
  content: '';
  display: block;
  height: 13px;
  left: 6px;
  margin-top: -6px;
  opacity: 0;
  position: absolute;
  top: 40%;
  transform: rotate(45deg);
  width: 6px;
  /* ふんわり出現 */
  transition: opacity .4s ease 0s;
}

/* チェックされた時の指定 */
#agree:checked::after {
  opacity: 1;
}