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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <!--

macOS Safari v11.0 で次の条件をすべて満たす場合に要素の line-height 計算値がおかしくなる模様。場合によってはレイアウトが崩れる(例:Google AdSense のレポート画面など)。

1. 環境設定の「これより小さいフォントサイズを使わない」が有効である
2. CSS で要素の line-height プロパティに単位付きの値が指定されている
3. その要素の font-size 計算値が極端に小さい(0 など)

-->
<div>A</div>
            
          
!
            
              div {
  background: #000;
  color: #fff;
  line-height: 16px;
  font-size: 0;
}
            
          
!
999px
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