JSFiddle - React, Tailwind, and code Playground

HTML

<nav>
  <ul class="q1">
    <li>
      <a href="#">123<img src="line.png" width="30px" height="30px"></a>
      <ul class="q2">
        <li><a href="#">333</a>
          <div class="vid"><a href="#" class="q44">124</a><a href="#" class="q33">OoO</a></div>
        </li>
        <li><a href="#">333</a><a href="#" class="q4">123</a></li>
        <li><a href="#">333</a>
          <div class="vid"><a href="#" class="q44">124</a>
            <div class="yu"><a href="#" class="q55">OoO</a>
              <ul class="q77">
                <li><a href="#">333</a></li>
                <li><a href="#">333</a></li>
                <li><a href="#">333</a></li>
              </ul>
            </div>
          </div>
        </li>
      </ul>
    </li>
    <li>
      <a href="#">123</a>
      <ul class="q2">
        <li><a href="#">333</a><a href="#" class="q4">123</a></li>
        <li><a href="#">333</a><a href="#" class="q4">123</a></li>
        <li><a href="#">333</a><a href="#" class="q4">xaxaxa</a></li>
      </ul>
    </li>
  </ul>
</nav>

CSS

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.q1 {
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
  overflow: hidden;
  padding-left: 15%;
}

.q1>li {
  display: inline-block;
  position: relative;
  vertical-align: top;
  z-index: 1000;
  height: 42px;
  transition: all 1s;
  width: 17%;
}

.q1>li img {
  position: absolute;
  top: 5px;
  left: 5px;
  transition: all .3s;
}

.q1>li>a {
  display: inline-block;
  text-decoration: none;
  padding: 12px 0px;
  width: 100%;
  text-align: center;
  background: #FF6633;
}

.q2 {
  position: absolute;
  top: -90px;
  left: 0;
  width: 100%;
  transition: all 1s;
  z-index: -1;
}

.q2>li {
  display: block;
  position: relative;
  width: 100%;
  z-index: 1000;
  margin-bottom: 3px;
  transition: all .1s;
  float: left;
}

.q2>li> a {
  display: inline-block;
  padding: 12px 0px;
  width: 100%;
  text-align: center;
  background: #336699;
}

.q1>li:hover .q2 {
  top: 45px;
}

.q1>li:hover img {
  transform: rotate(90deg);
}

.q1>li:hover {
  height: 360px;
}

nav {
  position: relative;
  height: 48px;
  margin: 50px 0 0 0px;
}

.q2>li>a.q4 {
  position: absolute;
  top: 0;
  left: 0;
  background: blue;
  transition: all 1s;
  z-index: -1;
}

.q2>li:hover {
  margin-left: 5px;
}

.q2>li:hover a.q4 {
  left: 101.5%;
}

.q1 li:first-child .q2 .q4 {
  right: 0;
  left: auto;
}

.q1 li:first-child .q2 li:hover .q4 {
  right: 101.5%;
}

/*.q1 li:first-child ul:not(.q77) li:hover {
  float: right;
  margin-left: 0;
  margin-right: 3px;
}*/

.q2>li>.vid {
  display: block;
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 100%;
  transition: all 1s;
  z-index: -1;
}

.q2>li .vid .q44 {
  display: inline-block;
  right: 0;
  top: 0;
  width: 100%;
  padding: 12px 0;
  background: green;
  transition: all 1s;
}

.q2>li .vid .q33 {
  display: inline-block;
  position: absolute;
  right: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: black;
  transition: all 1s;
  z-index:...

JavaScript

2