シンタックスハイライトのPrism.jsで長いコードに縦スクロールバーをつける

htmlでシンタックスハイライトを行うためのライブラリであるPrism.jsで、縦に長いコードを書いた時に縦スクロールバーをつける方法を調べてみました。

下記のcssを適用しておけば良いみたいです。

pre[class*="language-"] {
  max-height:210px;
  overflow-y:scroll
}

ハイライトさせるときにtoolbarの指定を行なっている場合は、下記の定義でもよいかもしれません。

pre.code-toolbar {
  max-height:210px;
  overflow-y:scroll
}

実行例

縦に長い出力ですが、スクロール可能になっています。

$ ~/.pyenv/bin/pyenv install -l

Available versions:
  2.1.3
  2.2.3
  2.3.7
  2.4
  2.4.1
  2.4.2
  2.4.3
  2.4.4
  2.4.5
  2.4.6
  2.5
  2.5.1
  2.5.2
  2.5.3
  2.5.4
  2.5.5
  2.5.6
  2.6.6
  2.6.7
  2.6.8
  2.6.9
  2.7-dev
  2.7
  2.7.1
  2.7.2
  2.7.3
  2.7.4
  2.7.5
  2.7.6
  2.7.7
  2.7.8
  2.7.9
  2.7.10
  2.7.11
  2.7.12
  2.7.13
  2.7.14
  2.7.15
  3.0.1
  3.1
  3.1.1
  3.1.2
  3.1.3
  3.1.4
  3.1.5
  3.2
  3.2.1
  3.2.2
  3.2.3
  3.2.4
  3.2.5
  3.2.6
  3.3.0
  3.3.1
  3.3.2
  3.3.3
  3.3.4
  3.3.5
  3.3.6
  3.3.7
  3.4.0
  3.4-dev
  3.4.1
  3.4.2
  3.4.3
  3.4.4
  3.4.5
  3.4.6
  3.4.7
  3.4.8
  3.5.0
  3.5-dev
  3.5.1
  3.5.2
  3.5.3
  3.5.4
  3.5.5
  3.5.5rc1
  3.6.0
  3.6-dev
  3.6.1
  3.6.2
  3.6.3
  3.6.4
  3.6.5
  3.7.0b3
  3.7-dev
  3.8-dev
  activepython-2.7.14
  activepython-3.5.4
  activepython-3.6.0
  anaconda-1.4.0
  anaconda-1.5.0
  anaconda-1.5.1
  anaconda-1.6.0
  anaconda-1.6.1
  anaconda-1.7.0
  anaconda-1.8.0
  anaconda-1.9.0
  anaconda-1.9.1
  anaconda-1.9.2
  anaconda-2.0.0
  anaconda-2.0.1
  anaconda-2.1.0
  anaconda-2.2.0
  anaconda-2.3.0
  anaconda-2.4.0
  anaconda-4.0.0
  anaconda2-2.4.0
  anaconda2-2.4.1
  anaconda2-2.5.0
  anaconda2-4.0.0
  anaconda2-4.1.0
  anaconda2-4.1.1
  anaconda2-4.2.0
  anaconda2-4.3.0
  anaconda2-4.3.1
  anaconda2-4.4.0
  anaconda2-5.0.0
  anaconda2-5.0.1
  anaconda2-5.1.0
  anaconda3-2.0.0
  anaconda3-2.0.1
  anaconda3-2.1.0
  anaconda3-2.2.0
  anaconda3-2.3.0
  anaconda3-2.4.0
  anaconda3-2.4.1
  anaconda3-2.5.0
  anaconda3-4.0.0
  anaconda3-4.1.0
  anaconda3-4.1.1
  anaconda3-4.2.0
  anaconda3-4.3.0
  anaconda3-4.3.1
  anaconda3-4.4.0
  anaconda3-5.0.0
  anaconda3-5.0.1
  anaconda3-5.1.0
  ironpython-dev
  ironpython-2.7.4
  ironpython-2.7.5
  ironpython-2.7.6.3
  ironpython-2.7.7
  jython-dev
  jython-2.5.0
  jython-2.5-dev
  jython-2.5.1
  jython-2.5.2
  jython-2.5.3
  jython-2.5.4-rc1
  jython-2.7.0
  jython-2.7.1
  micropython-dev
  micropython-1.9.3
  miniconda-latest
  miniconda-2.2.2
  miniconda-3.0.0
  miniconda-3.0.4
  miniconda-3.0.5
  miniconda-3.3.0
  miniconda-3.4.2
  miniconda-3.7.0
  miniconda-3.8.3
  miniconda-3.9.1
  miniconda-3.10.1
  miniconda-3.16.0
  miniconda-3.18.3
  miniconda2-latest
  miniconda2-3.18.3
  miniconda2-3.19.0
  miniconda2-4.0.5
  miniconda2-4.1.11
  miniconda2-4.3.14
  miniconda2-4.3.21
  miniconda2-4.3.27
  miniconda2-4.3.30
  miniconda3-latest
  miniconda3-2.2.2
  miniconda3-3.0.0
  miniconda3-3.0.4
  miniconda3-3.0.5
  miniconda3-3.3.0
  miniconda3-3.4.2
  miniconda3-3.7.0
  miniconda3-3.8.3
  miniconda3-3.9.1
  miniconda3-3.10.1
  miniconda3-3.16.0
  miniconda3-3.18.3
  miniconda3-3.19.0
  miniconda3-4.0.5
  miniconda3-4.1.11
  miniconda3-4.2.12
  miniconda3-4.3.11
  miniconda3-4.3.14
  miniconda3-4.3.21
  miniconda3-4.3.27
  miniconda3-4.3.30
  pypy-c-jit-latest
  pypy-c-nojit-latest
  pypy-dev
  pypy-stm-2.3
  pypy-stm-2.5.1
  pypy-1.5-src
  pypy-1.5
  pypy-1.6
  pypy-1.7
  pypy-1.8
  pypy-1.9
  pypy-2.0-src
  pypy-2.0
  pypy-2.0.1-src
  pypy-2.0.1
  pypy-2.0.2-src
  pypy-2.0.2
  pypy-2.1-src
  pypy-2.1
  pypy-2.2-src
  pypy-2.2
  pypy-2.2.1-src
  pypy-2.2.1
  pypy-2.3-src
  pypy-2.3
  pypy-2.3.1-src
  pypy-2.3.1
  pypy-2.4.0-src
  pypy-2.4.0
  pypy-2.5.0-src
  pypy-2.5.0
  pypy-2.5.1-src
  pypy-2.5.1
  pypy-2.6.0-src
  pypy-2.6.0
  pypy-2.6.1-src
  pypy-2.6.1
  pypy-4.0.0-src
  pypy-4.0.0
  pypy-4.0.1-src
  pypy-4.0.1
  pypy-5.0.0-src
  pypy-5.0.0
  pypy-5.0.1-src
  pypy-5.0.1
  pypy-5.1-src
  pypy-5.1
  pypy-5.1.1-src
  pypy-5.1.1
  pypy-5.3-src
  pypy-5.3
  pypy-5.3.1-src
  pypy-5.3.1
  pypy-5.4-src
  pypy-5.4
  pypy-5.4.1-src
  pypy-5.4.1
  pypy-5.6.0-src
  pypy-5.6.0
  pypy-5.7.0-src
  pypy-5.7.0
  pypy-5.7.1-src
  pypy-5.7.1
  pypy2-5.3-src
  pypy2-5.3
  pypy2-5.3.1-src
  pypy2-5.3.1
  pypy2-5.4-src
  pypy2-5.4
  pypy2-5.4.1-src
  pypy2-5.4.1
  pypy2-5.6.0-src
  pypy2-5.6.0
  pypy2-5.7.0-src
  pypy2-5.7.0
  pypy2-5.7.1-src
  pypy2-5.7.1
  pypy2.7-5.8.0-src
  pypy2.7-5.8.0
  pypy2.7-5.9.0-src
  pypy2.7-5.9.0
  pypy2.7-5.10.0-src
  pypy2.7-5.10.0
  pypy2.7-6.0.0-src
  pypy2.7-6.0.0
  pypy3-dev
  pypy3-2.3.1-src
  pypy3-2.3.1
  pypy3-2.4.0-src
  pypy3-2.4.0
  pypy3.3-5.2-alpha1-src
  pypy3.3-5.2-alpha1
  pypy3.3-5.5-alpha-src
  pypy3.3-5.5-alpha
  pypy3.5-c-jit-latest
  pypy3.5-5.7-beta-src
  pypy3.5-5.7-beta
  pypy3.5-5.7.1-beta-src
  pypy3.5-5.7.1-beta
  pypy3.5-5.8.0-src
  pypy3.5-5.8.0
  pypy3.5-5.9.0-src
  pypy3.5-5.9.0
  pypy3.5-5.10.0-src
  pypy3.5-5.10.0
  pypy3.5-5.10.1-src
  pypy3.5-5.10.1
  pypy3.5-6.0.0-src
  pypy3.5-6.0.0
  pyston-0.5.1
  pyston-0.6.0
  pyston-0.6.1
  stackless-dev
  stackless-2.7-dev
  stackless-2.7.2
  stackless-2.7.3
  stackless-2.7.4
  stackless-2.7.5
  stackless-2.7.6
  stackless-2.7.7
  stackless-2.7.8
  stackless-2.7.9
  stackless-2.7.10
  stackless-2.7.11
  stackless-2.7.12
  stackless-2.7.14
  stackless-3.2.2
  stackless-3.2.5
  stackless-3.3.5
  stackless-3.3.7
  stackless-3.4-dev
  stackless-3.4.1
  stackless-3.4.2
  stackless-3.4.7
  stackless-3.5.4

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