Normally you put custom CS stying isn the extra/less template for the style.
In this case you'd either style the image in the html where you have the actual image (e.g. <img style ="vertical-align:middle" src ="whateverthe source is" /)>
Or else give the image a class e.g. <img class="mid" src ="whateverthe source is" /)> and then add to the extra/less template:
Use Loom to record quick videos of your screen and cam. Explain anything clearly and easily – and skip the meeting. An essential tool for hybrid workplaces.