.blink {
    animation: blink 2s infinite steps(1);
}

@keyframes blink {
    50% {
        color: transparent;
    }
}

.dropdown-submenu {
    position: relative;
}

.dropdown-submenu a::after {
    transform: rotate(-90deg);
    position: absolute;
    right: 6px;
    top: 0.8em;
}

.dropdown-submenu .dropdown-menu {
    top: 0;
    left: 100%;
    margin-left: .1rem;
    margin-right: .1rem;
}