<nav id="navbar">
    <div class="dropdown-btn">Go To...</div>
    <ul class="navbar-tab">
        <li class="navbar-tab-1 selected">Test1</li>
        <li class="navbar-tab-1 select">Test2
            <ul class="hover-list select">
                <a><li>Item1</li></a>
            </ul>
        </li>
    </ul>
</nav>

.dropdown-btn{
width: 100%;
height: 50px;
background:white;
line-height: 50px;
display: none;
}

nav {
width: 100%;
height: 50px;
background-color: #d60d8c;
margin-bottom: 1px;
position: sticky;top: 0;
padding: 0px 0px;
border: none;
 }

ul{
text-indent: 0px;
  }
  nav:hover{
height: 50px;
  }

.navbar-tab {
display: block;
       }

    .hover-list{

position: absolute;

  }

 .navbar-tab-1 {

background:#d60d8c;
float: left;
border: none;

 }
 .navbar-tab-1+.navbar-tab-1{
border-bottom: none;
  }

  .hover-list{
border-top: black 3px solid;
    }

.navbar-tab {
padding-left: 20px;
display: block;
}

.navbar-tab {
max-width: 1240px;
}

.navbar-tab-1 {
padding-right: 68px;
width: auto;

}
.hover-list li{
background-color: #e2e2e2;
border-bottom: 1px white solid;
font-size: 15px;
text-indent: 20px;
height: 35px;
line-height: 35px;
width: 100vw;
border-top:none;
float: left;
}

ul li ul li {
display: block;
}

ul li{
font-size: 19px;
}