Bootstrap also provides display headings that can be used when you need a heading to stand out. Display headings are displayed in larger font-size but lighter font-weight.
Six different display headings are available. Here’s is an example:
Example
<h1 class="display-1">Display Heading 1</h1>
<h1 class="display-2">Display Heading 2</h1>
<h1 class="display-3">Display Heading 3</h1>
<h1 class="display-4">Display Heading 4</h1>
<h1 class="display-5">Display Heading 5</h1>
<h1 class="display-6">Display Heading 6</h1>
— The output of the above example will look something like this:

Working with Paragraphs
Bootstrap’s global default font-size is 1rem (typically 16px), with a line-height of 1.5 (typically 24px), which is applied to the <body> element as well as all the paragraphs i.e. the <p> elements. In addition to that margin-bottom of 1rem is also applied to all the paragraphs.
You can also make a paragraph stand out by adding the class .lead on it.
Example
<p>This is how a normal paragraph looks like in Bootstrap.</p>
<p class="lead">This is how a paragraph stands out in Bootstrap.</p>
— The HTML code in the above examples will produce the following result:

Tip: In CSS rem stands for “root em”. 1rem is equal to the font size of the root element (i.e. the <html> element), which is 16px in most browsers by default.
Text Alignment
You can easily align text to left, right, and center using the text alignment classes.
Example
<p class="text-start">Left aligned text on all viewport sizes.</p>
<p class="text-center">Center aligned text on all viewport sizes.</p>
<p class="text-end">Right aligned text on all viewport sizes.</p>
— The output of the above example will look something like this:

You can also align text based on screen size using the responsive text alignment classes. These classes use the same viewport width breakpoints as the grid system.
Example
<p class="text-sm-center">Text will be center aligned on small sized (sm) viewports and up.</p>
<p class="text-md-center">Text will be center aligned on medium sized (md) viewports and up.</p>
<p class="text-lg-center">Text will be center aligned on large sized (lg) viewports and up.</p>
<p class="text-xl-center">Text will be center aligned on extra-large sized (xl) viewports and up.</p>
Text Formatting
You are free to use text formatting tags like <strong>, <i>, <small> to make your text bold, italic, small and so on, in the same way you do in simple HTML page. Here’s an example:
Example
<p><b>This is bold text</b></p>
<p><code>This is computer code</code></p>
<p><em>This is emphasized text</em></p>
<p><i>This is italic text</i></p>
<p><mark>This is highlighted text</mark></p>
<p><small>This is small text</small></p>
<p><strong>This is strongly emphasized text</strong></p>
<p>This is <sub>subscript</sub> and <sup>superscript</sup></p>
<p><ins>This text is inserted to the document</ins></p>
<p><del>This text is deleted from the document</del></p>
— The output of the above example will look something like this:
