Hello,
1/ Appearance > Widgets > check content of Footer area. Then go to static blocks > edit Footer static block using Elementor.
2/ Please read this article – https://woocommerce.com/document/editing-product-data-tabs/
Edit a product > [8theme] Product Options > Custom tab title and Custom tab (edit content via Text tab)
3/ Add the next code in Theme Options > Theme custom CSS:
.single-product .single-product-size-guide .pointer {
max-width: 120px !important;
}
Regards