Improved Outlook for narrow width by menndouyukkuri

/* ==UserStyle==
@name           Improved Outlook for narrow width / 幅が狭い時のOutlookを改善
@namespace      github.com/openstyles/stylus
@version        1.0.6
@description    This makes improvements such as hiding the Outlook sidebar when the width is narrow. / 幅が狭い場合にOutlookのサイドバーを非表示にするなどの改善が行われます。
@author         menndouyukkuri
==/UserStyle== */

@-moz-document domain("outlook.office.com"), domain("outlook.office365.com"), domain("outlook.live.com") {
    body {
        min-width: 300px !important;
    }
    .ms-Panel._ybNL .ms-Panel-main {
        top: 84px;
        border-radius: 0 4px 0 0;
    }
    .xUQ79 {
        border-radius: 6px;
    }
    .xUQ79 > .kxkSv {
        margin-right: 17px;
    }
    #LeftRail button:hover {
        background-color: var(--colorNeutralBackground4Selected);
    }
    @media (max-width: 599px) {
        #innerRibbonContainer button[data-unique-id="Ribbon-588"] span.ms-Button-textContainer {
            display: none;
        }
    }
    @media (max-width: 499px) {
        #LeftRail {
            position: fixed;
            height: 100vh;
            transform: translateX(-50px);
            transition: 300ms;
            z-index: 1000;
        }
        #LeftRail:before {
            content: "";
            display: block;
            position: fixed;
            left: 100%;
            width: 12px;
            height: 100vh;
            background-color: transparent;
        }
        #LeftRail:hover {
            transform: translateX(0);
            transition: 300ms;
        }
        #LeftRail:hover:before {
            width: 40px;
        }
        .ms-Panel._ybNL {
            left: 0;
        }
        .ms-Panel._ybNL::before {
            display: none;
        }
    }
    div.GssDD {
        display: none;
    }
}

@-moz-document domain("outlook.office.com"), domain("outlook.office365.com") {
    @media (max-width: 499px) {
        #LeftRail {
            background-color: var(--neutralSecondarySurface);
        }
    }
}