/* Only animate underline if JS class is added */
.section-title-underline,
.section-title::after,
.section-title-left::after,
.expertise-title::after {
    transition: all 0.5s ease; /* smooth growth */
}

/* This will grow the underline on scroll */
.underline-active + .section-title-underline,
.underline-active::after {
    transform: scaleX(1);
    opacity: 1;
}