JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="content-container">
        <div class="content-wrap">
            <ul class="blocks">
                <li>1</li>
                <li>2</li>
                <li>3</li>
                <li>4</li>
                <li>5</li>
            </ul>
        </div>
    </div>
</div>
<div class="container">
    <div class="content-container">
        <div class="content-wrap">
            <ul class="blocks" style="min-width: 300px">
                <li>1</li>
                <li>2</li>
                <li>3</li>
                <li>4</li>
                <li>5</li>
            </ul>
        </div>
    </div>
</div>
<div class="container">
    <div class="content-container">
        <div class="content-wrap">
            <ul class="blocks" style="min-width: 300px">
                <li>1</li>
                <li>2</li>
            </ul>
        </div>
    </div>
</div>

CSS

.container {
    position: absolute;
    border: 3px solid red;
    max-width: 90%;
    margin-bottom: 20px
}
.container + .container {
    top: 260px;
}
.container + .container +.container {
    left: 400px
}
.content-container {
    border: 3px solid green;
    max-height: 200px;
    overflow: auto;
    padding: 15px;
}
.content-wrap {
    border: 3px solid navy;
}
.content {
    border: 3px solid red;
    padding: 10px;
}
.blocks {
    list-style: none;
    padding: 0;
    margin: 0;
}
.blocks li {
    border: 2px dashed green;
    padding: 20px;
    text-align: center;
    background-color: #ccc;
    margin-bottom: 5px;
}