Delete an item
To delete a single item click the '...' icon on the image and hit 'delete'. The images below the deleted item will move up to fill the empty space.
Hold down SHIFT and select the items you wish to delete. these items will be highlighted within a green box
Click the 'X' icon to the right of the pop up drawer and hit 'Delete' in the dialogue box to delete items.
Click 'Cancel' to the left to exit the bulk actions pop up drawer
If you want to delete everything on your board hold down SHIFT, hit 'Select all' in the pop up drawer and then hit 'X' to the right