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Learn about Bootstrap 5 utility classes.
Bootstrap 5 consists of dozens of utility classes for simple and fast styling without writing CSS code.
Use .border, .border-0, .border-top-0, etc. to manage borders.
Use .border-primary, .border-white, etc. to color borders.
Use .rounded, .rounded-circle, .rounded-pill for border radius.
Bootstrap 5 offers a wide range of responsive margin and padding utility classes.
The classes are named using the format {property}{sides}-{size}.
m (margin), p (padding)t (top), b (bottom), s (start), e (end), x (left&right), y (top&bottom), blank (all 4 sides)Use .shadow-none, .shadow-sm, .shadow, .shadow-lg to add box-shadows.
html/cssStyling borders.
<span class="border"></span>
<span class="border border-0"></span>
<span class="border border-top-0"></span>
<span class="border border-end-0"></span>
<span class="border border-bottom-0"></span>
<span class="border border-start-0"></span>
<br>
<span class="border border-primary"></span>
<span class="rounded"></span>
<span class="rounded-circle"></span>html/csshtml/css