Bootstrap gives ability to align the content with display property value of inline, inline-block, inline-table, table-cell.
Syntax:
.align-baseline
class will align to the baseline..align-top
class will align to the top..align-middle
class will align to the middle..align-bottom
class will align to the bottom..align-text-top
class will align text to the top..align-text-bottom
class will align text to the bottom.
<div class="align-middle">...</div>