How to change the size of the "You might also like text" on my product page....

How do i change the text size of the "you might also like" text on my product page please? Here is the link to the page in question: https://www.deepminds.world/shop/p/long-sleeve-t-003

You can add it to Website > Website Tools (under Not Linked) > Custom CSS

h2.ProductItem-related-label {
    font-size: 30px !important;
}