.dev/assets/design-styles/welcoming/css/blocks/button.scss
/*! Welcoming: Button */
.wp-block-search__button,
.wp-block-button__link:not(.wp-block-coblocks-social__button) {
padding-right: calc(var(--go-button--padding--x) + 40px) !important;
position: relative;
&::after {
background-color: currentColor;
background-repeat: no-repeat;
background-size: cover;
content: "";
display: inline-block;
height: 6px;
mask-image: url(../../../dist/images/design-styles/welcoming/arrow-right.svg);
position: absolute;
right: var(--go-button--padding--x);
top: 50%;
transform: translateY(-50%);
width: 34px;
}
}