You can change the alignment of your content based on screen sizes in Elementor. For instance you can set your title to be left-aligned in Desktop screen sizes and center-aligned in Mobile screen sizes.
In order to change the alignment of an element like Heading in Elementor:
1. In Elementor, select the element which alignment you want to change, like Heading. so that a new dashboard on the left will open with the element’s settings.
2. From Content tab, set an Alignment for it.
3. Click on Desktop icon in front of Alignment option which results in appearing two more device sizes modes alongside. Then you can set an alignment for each of them individually. For example you can center align the content in Mobile screen sizes.
4. Publish the changes.