Absolute positioning is the technique you want. You need to share your readonly designer link to that page for anyone to help with specifics.
Generally you’d make the wrapping DIV that contains the image and text relative, and then the image absolute, with 0 top and left position. That would stay the same through all breakpoints. You might need to adjust the container top padding and/or the image size at different breakpoints if you are trying to tweak the layout responsively.