css div in new line code example

Example 1: how to add div in new line

<div align="center" style="display: block; block; width: 100%; border: blue 1px solid; [COLOR="#FF0000"]clear:both;[/COLOR]">

Example 2: css make div one line

div {
    border: 1px solid black;
    width: 70px;
    overflow: hidden;
    white-space: nowrap;
}