JSFiddle - React, Tailwind, and code Playground

HTML

<div class="main">
    <div class="banner">
        <p>a</p>
        <p>b</p>
        <p>c</p>
        <p>d</p>
    </div>
    <div class="game">
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <p>Lorem ipsum</p>
        <div class="scroll">
            <div class="top"></div>
            <div class="bottom"></div>
        </div>
    </div>
</div>

CSS

.main {
    border: 1px solid red;
    width: 500px;
    height: 500px;
    position: absolute;
    overflow: hidden;
}

.main:after {
    content: '';
    display: block;
    position: absolute;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background: blue;
}

.banner {
    position: relative;
    width: 100%;
    height: auto;
    background: green;
    z-index: 1;
    overflow: hidden;
    color: yellow;
}

.game {
    color: orange;
    position: relative;
}
.scroll {
    width: 10px;
    height: 100%;
    background: yellow;
    position: absolute;
    right: 0;
    top: 0;
}
.top, .bottom {
    width: 10px;
    height: 10px;
    position: absolute;
    background: red;
}
.top {
    top: 0;
}
.bottom {
    bottom: 0;
}