.top-menu {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.top-menu__item {
    margin: 6px 46px 6px 0;
}
.top-menu__item a {
    font-weight: 600;
    line-height: 17px;
    font-size: 14px;
    position: relative;
}
.top-menu__item a::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--font-color);
    transform: scaleX(0);
    opacity: 0;
    transition: .3s ease;
    transform-origin: left;
}
.top-menu__item.selected a::before, .top-menu__item:hover a::before {
    transform: scaleX(1);
    opacity: 1;
}