With inCMS you have different possibilities to design your header image.
The first option you have is to use the header module and the design settings.
You can see that the picture disappears in the mobile version.
The second option you have is to add a text and a picture in two separate grids.
If you choose this option, the picture stays in the mobile version.
The last option you have is to insert a picture, which fills the whole width.
Now let's take a closer look at all three options.
If you chose the first option, click on the green plus icon and select "header".
Now click on the new added plus icon and type in for example the title of your website.
Next go to settings and click on header.
Now click on "image from files" and select the picture you'd like to add.
As soon as you're done editing, click on save and close.
Click on preview to see your new header image.
If you chose the second option you have to select a grid.
Now you can add a text in the one column and a picture in the other column.
If you chose the last option you have to find a picture with appropriate size proportions, that fills the whole width.
You can edit it in advance with an image tool.
To add the picture click on the green plus icon and select image.
In addition you can decide whether you want to have rounded corners or not.
Click on settings and then on layout.
Go to round corners and type in for example the number zero.
As you can see the corners disappeared.
Next type in for example 20 percent and now you see that the corners are back.
If you chose an picture that does not meet the required proportions, you have the possibility to crop the image and make it more suitable.