JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <ul>
        <li>1</li> <li>2</li> <li>3</li>
        <li>4</li> <li>5</li> <li>6</li>
        <li>7</li> <li>8</li> <li>9</li>
        <li>1</li> <li>2</li> <li>3</li>
        <li>4</li> <li>5</li> <li>6</li>
        <li>7</li> <li>8</li> <li>9</li>
        <li>1</li> <li>2</li> <li>3</li>
        <li>4</li> <li>5</li> <li>6</li>
        <li>7</li> <li>8</li> <li>9</li>
    </ul>
    <br/ >
</div>

CSS

div
{
    overflow: hidden;
}
ul
{
    white-space: nowrap;
    overflow: hidden;
    overflow-x:visible;
    background: grey;
    margin: 2px;
}
li
{
    display: inline-block;
    position: relative;
    top: 3px;
    background: white;
}
/* decorations. */
div
{
    border: 1px solid black;
    border-radius: 4px;
    
}
ul
{
    
    border: 1px solid blue;
    border-radius: 4px;
    padding: 0px;
}
li
{
    list-style: none;
    padding: 2px;
    border-radius: 2px;
    margin: 2px;
    position: relative;
}
li:before, li:after
{
    font-weight: bold;
    font-size: larger;
    content: "::";
}