css centering main div 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: how to center a div element
/*ADD MARGIN auto to left and right*/
.box1{
width:80%;
margin:0 auto;
}