Responsiveness

There's a nice feature to chrome-devtools: add a screen to the left in which you can simulate mobile phones to see how for example your images are responding to small screens.

The majority of visitors use a mobile device, they must have a good experience while browsing your site, or you won't keep them for long.

• Clear browser-cache
• Go to your website
• Right-click and select the tool at the bottom

• Select the small screen-in-screen icon in the left top corner, it's the second one of the two icons that sit there
• On the left a screen appears showing your website on a mobile device
• Adjust with the slide-grip on the side
• Or adjust with the pre-settings (you can add extra devices by clicking on "Edit")

See next section for second picture