Style fix for Amazon's Send To Kindle Chrome extension

fix.css

/* hide useless elements */
#s2k-feedback-menu,
#s2k-reader-header-logo,
#s2k-metadata-menu,
#s2k-reader-header-close {
    display: none;
}

/* remove top bar */
#s2k-reader-header {
    background: none !important;
    box-shadow: none !important;
}

/* nicer send button */
#s2k-reader-header-send {
    width: auto !important;
    border: none !important;
    background: none !important;
    color: #dddddd !important;
}

/* place the style menu top left */
#s2k-layout-menu {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
}
#s2k-layout-header {
    margin: 1em;
}

/* make the article fullscreen */
#s2k-reader-container {
    top: 0 !important;
}
#s2k-reader {
    border: none !important;
}

/* change the black theme colors */
.mode-black {
    color: #dddddd !important;
    background-color: #212324 !important;
}

/* more relaxed header */
header.s2k-article-header {
    line-height: initial;
    margin-top: 1em;
    margin-bottom: 3em;
}

/* larger images */
.s2k-default-image {
    width: auto !important;
    max-width: 100% !important;
    border: none !important;
}
.s2k-default-image img {
    width: auto !important;
}

/* clickable metadata */
.s2k-metadata-content {
    cursor: pointer;
}

/* bigger fixed width text snippets */
pre {
    font-size: 60%;
}

/* fix numbered list margin and color */
ol, ul {
    color: inherit !important;
    margin-left: 2em !important;
}

fix.js

setTimeout(function () {
    document.querySelectorAll('.s2k-metadata-content').forEach(function (elem) {
        elem.addEventListener('click', function () {
            document.querySelector('#s2k-metadata-header').click();
        });
    });
}, 1000);

manifest.json

{
    "manifest_version": 2,
    "name": "Better Send To Kindle",
    "version": "0.1",
    "content_scripts": [
        {
            "matches": ["https://www.amazon.com/gp/sendtokindle/reader?article=*"],
            "css": ["fix.css"],
            "js": ["fix.js"]
        }
    ],
    "permissions": [
        "https://www.amazon.com/gp/sendtokindle/reader?article=*"
    ]
}