ボタン49

$BLOCK_NAME: '.button-49';

// 変数
$bg_offset: 30px;

#{ $BLOCK_NAME } {
  position: relative;
  display: inline-block;
  padding: 16px;
  text-align: center;
  background: #000;
  border-radius: 9999px;
  color: #fff;
  min-width: 240px;
  overflow: hidden;
  &::before {
    top: 0;
    bottom: 0;
    left: -$bg_offset;
    right: 0;
    position: absolute;
    content: '';
    background: url(https://picsum.photos/id/29/400/200);
    background-size: cover;
    opacity: 0;
    transition: opacity 0.5s, transform 0.5s;
  }
  &:hover {
    color: #fff;
    &::before {
      opacity: 0.5;
      transform: translateX($bg_offset);
    }
  }

  &__text {
    position: relative;
    z-index: 1;
  }
}