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Firefox70以上で上タブを非表示にする

Last updated at Posted at 2019-08-30

①プロファイルを開く

about:supportからフォルダを開く
スクリーンショット 2019-08-30 10.08.45.png

② userChrome.cssの作成

chromeフォルダの作成。
その中にuserChrome.cssを作成し以下のコードを追加

*#*tabbrowser-tabs {
visibility: collapse !important;
}

③userChrome.cssを有効にさせる

about:Configからtoolkit.legacyUserProfileCustomizations.stylesheetの値をtrueに変更
スクリーンショット 2019-08-30 10.11.20.png

はい完成

スクリーンショット 2019-08-30 19.11.30.png

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