center items in div with display block code example
Example 1: css center text in div
/* For horizontal align: */
parent-element {text-align:center;}
/* For horizontal and vertical align: */
parent-element {position: relative;}
element-to-be-centered {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
/* See https://www.w3schools.com/css/css_align.asp for more info */
Example 2: how to put container in center of page
#container
{
width: 400px;
margin-left: auto;
margin-right: auto;
}