Using the double class within the .solution environment and adjusting the label of the .solution environment using CSS styling

Currently constructing a book with the use of quarto, where the inclusion of theorems, lemmas, corollaries, and other elements is necessary. In the quarto documentation, as seen here, it is advised to utilize the proof, remark, and solution environments for this purpose. These environments are chosen with the intention of being able to render the book not only in html, but also in latex in the future.

Provided below is a reproducible example pertaining to a .qmd file with an empty styles.css:

---
title: "Untitled"
format: 
  html:
    css: styles.css
editor: visual
---

## Example of a Proof

::: proof
This is the proof.
:::

## Example of a Solution

::: solution
This is the solution.
:::

Upon inspecting the code outputted in a web browser for html, specifically in relation to the mentioned environments, the following is observed:

Proof Environment

<div class="proof">
<p><span class="proof-title">
<em>Proof</em>. 
</span>This is the proof.</p>
</div>

Solution Environment

<div class="solution proof">
<p><span class="proof-title">
<em>Solution</em>. 
</span>This is the solution.</p>
</div>

Given the aforementioned observations and the fact that I am relatively new to working with html and css, I have the following inquiries:

  • What is the reason behind quarto assigning 2 classes to the solution environment? Is this intentional or possibly a bug?
  • Is it feasible to modify the label within <em>Solution</em>, which is associated with the solution and proof-title classes, without affecting the proof class by means of the styles.css file?

Answer №1

In response to your initial query, as far as my knowledge goes, the rationale behind utilizing the class proof for the "Solution" section is to maintain a consistent style with the "Proof" section. Essentially, both the Proof and Solution sections share certain CSS properties through the .proof class.

Furthermore, you can specifically target the "Solution" heading by using the CSS selector .solution. proof-title.

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