postcss-editor-styles/test/tags.expect.css

Remove your editor-styles from the global scope

.editor-styles-wrapper button:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    box-shadow: inset 0 0 0 20rem rgba(189, 196, 201, 0.3);
}

.editor-styles-wrapper button:focus:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]),
.editor-styles-wrapper button:hover:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    box-shadow: none;
}

.editor-styles-wrapper .some button:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    font-family: icons;
}

.editor-styles-wrapper form a:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    color: red;
}

.editor-styles-wrapper a:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    font-weight: 700;
}

.editor-styles-wrapper h1 {
    font-size: 2em;
}

.editor-styles-wrapper hr {
    overflow: visible;
}

.editor-styles-wrapper input[type="submit"]:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    display: block;
}

.editor-styles-wrapper nav ol,
.editor-styles-wrapper nav ul {
    list-style: none;
}

.editor-styles-wrapper [type="submit"]:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    font-size: 1em;
}

.editor-styles-wrapper input[type="submit"]:not([class^="components-"]):not([class^="editor-"]):not([class^="block-"]):not([aria-owns]):not([id^="mceu_"]) {
    font-size: 1em;
}

.editor-styles-wrapper abbr[title] {
    text-decoration: underline dotted;
}

.editor-styles-wrapper td,
.editor-styles-wrapper th,
.editor-styles-wrapper tr {
    color: #b2b2b2;
}