how to place content side by side in html code example

Example 1: place div side by side

<div style="width: 100%; display: table;">
    <div style="display: table-row">
        <div style="width: 600px; display: table-cell;"> Left </div>
        <div style="display: table-cell;"> Right </div>
    </div>
</div>

Example 2: place div side by side

<div style="width: 100%; overflow: hidden;">
    <div style="width: 600px; float: left;"> Left </div>
    <div style="margin-left: 620px;"> Right </div>
</div>