JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class ="alphabet">
        abcdefgh<br />
        abcdefgh<br />
        abcdefgh<br />
        abcdefgh<br />
    </div>
</div>
<hr>

CSS

.container{
    overflow-y:auto; 
    overflow-x:hidden; 
    height:50px;
    width:100px;
}

.alphabet{          
    width:100%;
    overflow:visible;
    box-sizing:border-box;
    border:1px solid;
    border-bottom:0;
}

hr{
    margin:0;
    height:0;
    width:85px;
    border:0;
    border-bottom:1px solid;
}