center an element horizontally on div css bootstrap code example
Example 1: center div horizontally and vertically
.parent {
position: relative;
}
.child {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
Example 2: bootstrap center button horizontally
<button type="submit" class="btn btn-primary mx-auto d-block">Submit</button>