Bootstrap class: .display-# (1-4)

<h1 class="display-1">Display 1</h1>
<h1 class="display-2">Display 2</h1>
<h1 class="display-3">Display 3</h1>
<h1 class="display-4">Display 4</h1>

Preview

Display 1

Display 2

Display 3

Display 4

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