Show div on hover another div

I have this menu:

and I need that when hover on every item, another div show over it like this:

but I can't figure it out yet how to do it. I've tried putting the div inside every router-link and put it a z-index, also modifying the display with css, going from "display: none" to "display: block" on hover, but nothing has worked yet.

This is the current code of the menu:

        <div class="ml-auto p-3 d-none d-lg-flex align-items-center">
          <div class="d-flex">
            <router-link
              class="
                routerlink
                text-gray-600
                hover:text-gray-400
                fs-13
                mx-2
                font-weight-500
              "
              to="/beer-universe"
              >Universo cervecero</router-link
            >
          </div>

          <div class="vl mx-2"></div>
          <div class="d-flex">
            <router-link
              class="
                text-gray-600
                hover:text-gray-400
                fs-13
                mx-2
                font-weight-500
              "
              to="/care-benefits"
              >Cuidados y beneficios</router-link
            >
          </div>
          <div class="vl mx-2"></div>
          <div class="d-flex">
            <router-link
              class="
                text-gray-600
                hover:text-gray-400
                fs-13
                mx-2
                font-weight-500
              "
              to="/betterWorld"
              >Un mundo mejor</router-link
            >
          </div>
          <div class="vl mx-2"></div>
          <div class="d-flex position-relative justify-content-center">
            <router-link
              class="
                text-gray-600
                hover:text-gray-400
                fs-13
                mx-2
                font-weight-500
              "
              to="/ambassadors"
              >Somos embajadores</router-link
            >
          </div>
          <div class="vl mx-2"></div>
          <div class="d-flex">
            <router-link
              class="
                text-gray-600
                hover:text-gray-400
                fs-13
                mx-2
                font-weight-500
              "
              to="/linkedin-learning"
            >
              Entrénate
            </router-link>
          </div>

          <div role="button" class="d-flex mx-2" @click="showSearchBox()">
            <span
              class="icon-buscar fs-20 mx-2"
              :class="showSearch ? 'text-red-400' : 'text-gray-600'"
            ></span>
          </div>
          <div role="button" class="mx-2" @click="showHideMenuProfile()">
            <img
              v-if="user.prof_picture !== null"
              class="rounded-circle m-2"
              :src="uriResources + '/' + user.prof_picture"
              title="Perfil"
              width="34"
              height="34"
              style="object-fit: cover"
            />
            <img
              v-else
              class="rounded-circle m-2"
              title="Perfil"
              width="34"
              height="34"
              :src="imgVideo"
            />
          </div>
        </div>