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HTML

              
                <div class="antialiased bg-gray-200 min-h-screen p-8">
  <div class="flex justify-center">
    <nav id="nav" class="w-56 relative">
      <span
        class="absolute h-10 w-full bg-white rounded-lg shadow ease-out transition-transform transition-medium"
        :style="{ transform: `translateY(calc(100% * ${selected}))` }"
      ></span>
      <ul class="relative">
        <li>
          <button
            type="button"
            @click="select(0)"
            :aria-selected="selected === 0"
            class="py-2 px-3 w-full flex items-center focus:outline-none focus-visible:underline"
          >
            <svg
              :class="selected === 0 ? 'text-indigo-400' : 'text-gray-500'"
              class="h-6 w-6 transition-all ease-out transition-medium"
              viewBox="0 0 24 24"
              fill="currentColor"
            >
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M12.707 2.293a1 1 0 00-1.414 0l-9 9a1 1 0 101.414 1.414L4 12.414V21a1 1 0 001 1h5a1 1 0 001-1v-6h2v6a1 1 0 001 1h5a1 1 0 001-1v-8.586l.293.293a1 1 0 001.414-1.414l-9-9zM18 10.414l-6-6-6 6V20h3v-6a1 1 0 011-1h4a1 1 0 011 1v6h3v-9.586z"
              />
            </svg>
            <span
              :class="selected === 0 ? 'text-indigo-600' : 'text-gray-700'"
              class="ml-2 text-sm font-medium transition-all ease-out transition-medium"
            >
              Home
            </span>
          </button>
        </li>
        <li>
          <button
            type="button"
            @click="select(1)"
            :aria-selected="selected === 1"
            class="py-2 px-3 w-full flex items-center focus:outline-none focus-visible:underline"
          >
            <svg
              :class="selected === 1 ? 'text-indigo-400' : 'text-gray-500'"
              class="h-6 w-6 transition-all ease-out transition-medium"
              viewBox="0 0 24 24"
              fill="currentColor"
            >
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M11.617 1.076a1 1 0 011.09.217l5.657 5.657a9 9 0 11-13.113.41A1 1 0 017 8.022v2.292a2 2 0 104 0V2a1 1 0 01.617-.924zM13 4.414v5.9A4 4 0 015.212 11.6 7 7 0 1016.95 8.364L13 4.414z"
              />
            </svg>
            <span
              :class="selected === 1 ? 'text-indigo-600' : 'text-gray-700'"
              class="ml-2 text-sm font-medium transition-all ease-out transition-medium"
            >
              Popular
            </span>
          </button>
        </li>
        <li>
          <button
            type="button"
            @click="select(2)"
            :aria-selected="selected === 2"
            class="py-2 px-3 w-full flex items-center focus:outline-none focus-visible:underline"
          >
            <svg
              :class="selected === 2 ? 'text-indigo-400' : 'text-gray-500'"
              class="h-6 w-6 transition-all ease-out transition-medium"
              viewBox="0 0 24 24"
              fill="currentColor"
            >
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M12 7a1 1 0 011-1h8a1 1 0 011 1v8a1 1 0 11-2 0V8h-7a1 1 0 01-1-1z"
              />
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M20.707 7.293a1 1 0 010 1.414l-7 7a1 1 0 01-1.414 0L9 12.414l-5.293 5.293a1 1 0 01-1.414-1.414l6-6a1 1 0 011.414 0L13 13.586l6.293-6.293a1 1 0 011.414 0z"
              />
            </svg>
            <span
              :class="selected === 2 ? 'text-indigo-600' : 'text-gray-700'"
              class="ml-2 text-sm font-medium transition-all ease-out transition-medium"
            >
              Trending
            </span>
          </button>
        </li>
        <li>
          <button
            type="button"
            @click="select(3)"
            :aria-selected="selected === 3"
            class="py-2 px-3 w-full flex items-center focus:outline-none focus-visible:underline"
          >
            <svg
              :class="selected === 3 ? 'text-indigo-400' : 'text-gray-500'"
              class="h-6 w-6 transition-all ease-out transition-medium"
              viewBox="0 0 24 24"
              fill="currentColor"
            >
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M7 10a3 3 0 013-3h8a3 3 0 013 3v8a3 3 0 01-3 3h-8a3 3 0 01-3-3v-8zm3-1a1 1 0 00-1 1v8a1 1 0 001 1h8a1 1 0 001-1v-8a1 1 0 00-1-1h-8z"
              />
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M3 6a3 3 0 013-3h10a1 1 0 110 2H6a1 1 0 00-1 1v10a1 1 0 11-2 0V6z"
              />
            </svg>
            <span
              :class="selected === 3 ? 'text-indigo-600' : 'text-gray-700'"
              class="ml-2 text-sm font-medium transition-all ease-out transition-medium"
            >
              Subscriptions
            </span>
          </button>
        </li>
        <li>
          <button
            type="button"
            @click="select(4)"
            :aria-selected="selected === 4"
            class="py-2 px-3 w-full flex items-center focus:outline-none focus-visible:underline"
          >
            <svg
              :class="selected === 4 ? 'text-indigo-400' : 'text-gray-500'"
              class="h-6 w-6 transition-all ease-out transition-medium"
              viewBox="0 0 24 24"
              fill="currentColor"
            >
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M4 5a3 3 0 013-3h10a3 3 0 013 3v16a1 1 0 01-1.447.894L12 18.618l-6.553 3.276A1 1 0 014 21V5zm3-1a1 1 0 00-1 1v14.382l5.553-2.776a1 1 0 01.894 0L18 19.382V5a1 1 0 00-1-1H7z"
              />
            </svg>
            <span
              :class="selected === 4 ? 'text-indigo-600' : 'text-gray-700'"
              class="ml-2 text-sm font-medium transition-all ease-out transition-medium"
            >
              Bookmarks
            </span>
          </button>
        </li>
        <li>
          <button
            type="button"
            @click="select(5)"
            :aria-selected="selected === 5"
            class="py-2 px-3 w-full flex items-center focus:outline-none focus-visible:underline"
          >
            <svg
              :class="selected === 5 ? 'text-indigo-400' : 'text-gray-500'"
              class="h-6 w-6 transition-all ease-out transition-medium"
              viewBox="0 0 24 24"
              fill="currentColor"
            >
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M13 11.586l2.536 2.535a1 1 0 11-1.415 1.415l-2.828-2.829A.997.997 0 0111 12V8a1 1 0 112 0v3.586z"
              />
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M5 1a1 1 0 011 1v1.998c3.918-2.945 9.506-2.635 13.071.93 3.905 3.906 3.905 10.238 0 14.143-3.905 3.905-10.237 3.905-14.142 0A9.972 9.972 0 012 12a1 1 0 112 0 8 8 0 101.777-5.029A1 1 0 014 6.341V2a1 1 0 011-1z"
              />
              <path
                fill-rule="evenodd"
                clip-rule="evenodd"
                d="M11.293 12.707A.997.997 0 0111 12V8a1 1 0 112 0v3.586l2.536 2.535a1 1 0 11-1.415 1.415l-2.828-2.829zM5.934 1.643A1 1 0 004 2v4.342a1 1 0 001.777.63A8 8 0 114 12v-.001a1 1 0 10-2 0c0 2.558.977 5.119 2.929 7.071 3.905 3.905 10.237 3.905 14.142 0 3.844-3.844 3.904-10.04.18-13.957A10.004 10.004 0 006 3.999V2a.998.998 0 00-.066-.357zM5 2.25z"
              />
            </svg>
            <span
              :class="selected === 5 ? 'text-indigo-600' : 'text-gray-700'"
              class="ml-2 text-sm font-medium transition-all ease-out transition-medium"
            >
              History
            </span>
          </button>
        </li>
      </ul>
    </nav>
  </div>
</div>

              
            
!

CSS

              
                .ease-in {
  transition-timing-function: cubic-bezier(0.4, 0, 1, 1);
}
.ease-out {
  transition-timing-function: cubic-bezier(0, 0, 0.2, 1);
}
.ease-in-out {
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-fastest {
  transition-duration: 75ms;
}
.transition-faster {
  transition-duration: 100ms;
}
.transition-fast {
  transition-duration: 150ms;
}
.transition-medium {
  transition-duration: 200ms;
}
.transition-slow {
  transition-duration: 300ms;
}
.transition-slower {
  transition-duration: 500ms;
}
.transition-slowest {
  transition-duration: 700ms;
}

.transition-all {
  transition-property: all;
}
.transition-opacity {
  transition-property: opacity;
}
.transition-transform {
  transition-property: transform;
}

.focus-visible.focus-visible\:underline {
  text-decoration: underline;
}

              
            
!

JS

              
                new Vue({
  el: "#nav",
  data: {
    selected: 1
  },
  methods: {
    select(i) {
      this.selected = i;
    }
  }
});

              
            
!
999px

Console