<!doctype html>
<style>
    body * {
        border: 5px solid red;
        padding: 5px;
    }

    span {
        display: inline-block;
        width: 200px;
        border-color: green;
    }

    .max-width-min-content,
    .max-width-max-content,
    .max-width-fit-content {
        display: inline-block;
    }
</style>

<div class="max-width-min-content">
    <span>Min Content</span><br>on this box.
</div>

<br>

<div class="max-width-max-content">
    <span>Max Content</span> on this box.
</div>

<br>

<div class="max-width-fill-available">
    <span>Fill Available</span> on this box.
</div>

<div class="max-width-fit-content">
    <span>Fit Content</span> on this box.
</div>