Тестовая статейка для проверки других статеек

Easily add a heading container to your panel with .panel-heading. You may also include any 

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with a .panel-title class to add a pre-styled heading. However, the font sizes of 

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are overridden by .panel-heading. For proper link coloring, be sure to place links in headings within .panel-title.

Источник: for-dle.ru