JavaScript

dashDoc.addEntry({
    type: document.querySelector('#quick-reference') ? 'Property' : 'Guide',
    name: document.title.split(' - ')[0],
})

const toc = document.querySelector('body > div > div > div:nth-child(2) > div:nth-child(3) > div:nth-child(2) > div:last-child.max-xl\\\\:hidden ul')
for (const heading of toc.querySelectorAll(':scope > li > a')) {
    dashDoc.addEntry({
        type: 'Section',
        name: heading.textContent,
        hash: heading.hash.slice(1)
    })

    const subheadings = heading.nextElementSibling
    if (subheadings) {
        for (const subheading of subheadings.querySelectorAll(':scope > li > a')) {
            dashDoc.addEntry({
                type: 'Section',
                name: `${heading.textContent} > ${subheading.textContent}`,
                hash: subheading.hash.slice(1)
            })
        }
    }
}

CSS

/* Header */
body > div > div > div:first-child,
/* Left sidebar */
body > div > div > div:nth-child(2) > div:first-child,
body > div > div > div:nth-child(2) > div:nth-child(2),
/* Right sidebar */
body > div > div > div:nth-child(2) > div:nth-child(3) > div:nth-child(2) > div:last-child.max-xl\\:hidden,
body > div > div > div:nth-child(2) > div:nth-child(4),
/* Footer */
footer,
body > div > div > div:nth-child(2) > div:last-child {
    display: none;
}

/* Full size content */
body > div > div > div:nth-child(2) {
    display: block;
    padding: 0;
}

body > div > div > div:nth-child(2) > div:nth-child(3) {
    display: block;
}

body > div > div > div:nth-child(2) > div:nth-child(3) > div:nth-child(2) {
    display: block;
    max-width: initial;
}