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In order to display the hero carousel component you firstly have to select a MOBILE DEVICES SCENARIO[1]. Here you can select following options:
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In the image upload area on the left-hand side you can insert an image using the Magento 2 media explorer[2]. If you already have a hero image, you can remove it using the “bin” icon. There is also a possibility to add video - more 2.16. Video Teasers. If you have more than one hero image (added using the the “+” icon) you can move the given hero image using the “arrow up” and “arrow down” icons. Also you can change the existing hero image by clicking “change”.
Select the DISPLAY VARIANT, which controls the text location on the hero image. Depending on the styling of the Magento 2 instance, the options are
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When the settings have been made, click SAVE.
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[1] The breakpoints for the devices are: mobile up to 767px, tablet 768 - 1023px, desktop 1024px
[2] It is recommended to use JPG and PNG (RGB format) file types for images