.stm-header__row_color.pearl_is_sticky {
transition: .3s ease;
}
.stm-header__row_color.pearl_going_sticky {
position: fixed;
top: 0;
left: 0;
right: 0;
transform: translateY(-100%);
box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
transition: 0s ease;
}
.stm-header__row_color.pearl_sticked {
transform: translateY(0);
transition: .3s ease;
}