JSFiddle - React, Tailwind, and code Playground

by Gwyn Milcote

HTML

<div class="flexcontainer">
    <div class="" id="canvas-left">
        <div class="stickthis">
            <p>This content should not scroll</p>
        </div>
    </div>
    <div class="" id="content">
        <div>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
            <p>Scrolling Content</p>
        </div>
    </div>
    
</div>

CSS

html, body {
    padding: 0;
    margin: 0;
}
.flexcontainer {
    display: flex;
    flex-direction: row;
    min-height: 100%;
    align-items: stretch;
}
.flexitem {
    display: flex;
}
#canvas-left {
    background: yellow;
    order: -1;
    flex: 0 0 57px;
}
#content {
    background: green;
    order: 1;
    padding: 1rem;
}
#content p {
    display: block;
}

.stickthis {
    position: sticky;
    position: -webkit-sticky;
    top: 0;
    background-color: red;
}


#canvas-right{
    background: blue;
    order: 2;
    flex: 0 0 57px;
}
.fixed {
    position: fixed;
    width: 57px;
}