how to center a div on a page code example

Example 1: how to put container in center of page

#container
{
    width: 400px;
    margin-left: auto;
    margin-right: auto;
}

Example 2: how to make a division center css

position:absolute;
top:50%;
left:50%;
transform:translate(-50%,-50%);

Example 3: how to put container in center of page

div.InSkinAlignCenter {
margin: 0 auto;
}