how to embed a website in html code example

Example 1: how to show other website inside my website

<iframe src="http://www.codegrepper.com" width= 600px height=200px></iframe>

Example 2: iframe

<iframe id="inlineFrameExample"
    title="Inline Frame Example"
    width="300"
    height="200"
    src="https://www.openstreetmap.org/export/embed.html?bbox=-0.004017949104309083%2C51.47612752641776%2C0.00030577182769775396%2C51.478569861898606&layer=mapnik">
</iframe>