WordPress ContactForm7で チェックボックスなどにスタイルをあてる方法

とりあえず忘れないうちにコピペ！

SASS↓

  input
    &[type=checkbox]
      display: none
  .wpcf7-list-item-label
    margin-top: 15px
    margin-right: 40px
    margin-bottom: 20px
    padding-left: 40px
    position: relative
    display: block
    height: 28px
    font-size: 18px
    font-family: $font_go
    line-height: 28px
    &::before
      content: ""
      display: block
      position: absolute
      top: 0
      left: 0
      width: 28px
      height: 28px
      background: #fff
      box-shadow: 0 0 5.34px 0.66px rgba(#000, .06)
  input[type=checkbox]:checked + .wpcf7-list-item-label
    &::after
      content: ""
      display: block
      position: absolute
      top: 0
      left: 0
      width: 28px
      height: 28px
      background: url("../img/icon_check.png") center center no-repeat