center a paragraph in a div code example

Example 1: how to put container in center of page

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

Example 2: center text in div container

text-align: center

Example 3: put text in center of a div

html, body {
    height: 100%;
}
.parent {
    width: 100%;
    height: 100%;
    display: table;
    text-align: center;
}
.parent > .child {
    display: table-cell;
    vertical-align: middle;
}

Example 4: how to assign something in center inside a div

IMG.displayed {
    display: block;
    margin-left: auto;
    margin-right: auto }
...
<IMG class="displayed" src="..." alt="...">