Im Nightly CSS Missfunktion bei "Über Nightly"

/* About : Dialog */

    @-moz-document url-prefix("chrome://browser/content/aboutDialog.xhtml") {

    #aboutDialog,
    #aboutDialogContainer,
    #agent .textbox-input-box,
    #agent,
    #bottomBox,
    #clientBox,
    #leftBox,
    #trademark,
    #updateBox > vbox:nth-child(2) > hbox:nth-child(2),
    #updateButton,
    #version,
    #version::before
    {
        font-family: 'Comic Sans MS' !important;
    }

    #aboutDialog vbox,
    #aboutDialogContainer hbox,
    #clientBox vbox,
    #contributeDesc > label:nth-child(1),
    #contributeDesc > label:nth-child(2),
    #releasenotes,
    #trademark,
    #updateButton,
    label.bottom-link:nth-child(3),
    [href='about:credits'],
    [href='about:license'],
    [href='about:rights'],
    [href='https://www.mozilla.org/?utm_source=firefox-browser&utm_medium=firefox-desktop&utm_campaign=about-dialog']
    {
        font-size: 15px !important;
    }


    #contributeDesc > label:nth-child(1),
    #contributeDesc > label:nth-child(2),
    #releasenotes,
    label.bottom-link:nth-child(3),
    [href='about:credits'],
    [href='about:license'],
    [href='about:rights'],
    [href='https://www.mozilla.org/?utm_source=firefox-browser&utm_medium=firefox-desktop&utm_campaign=about-dialog']
    {
        text-decoration: none !important;
    }

    #aboutDialog,
    #aboutDialogContainer,
    #bottomBox,
    #clientBox,
    #trademark
    {
        background-color: #202340 !important;
    }
	
    #updateDeck::before
    {
        content: 'Boersenfeger seine Nightly-Version ist:';
        font-size: 17px !important;
        font-weight: bold !important;
        color: #f08080 !important;
        margin-right: 6px !important;
        margin-left: 0px !important;
    }

    #version
    {
        font-size: 16px !important;
        margin-top: 30px !important;
        color: #fff !important;
    }

    #aboutDialog
    {
      max-height: 600px !important;
      min-width: 1100px !important;     
    }

    #agent
    {   appearance: none !important;
        margin: 50px 40px 84px -1px !important;
        max-height: 50px !important;
        padding: 5px 10px 0 10px !important;
        text-align: center !important;
        border-radius: 14px !important;
        max-width: 1300px !important;
    }

    #clientBox {
        margin-left: -50px !important;
        margin-right: 50px !important;
        }
    #agent .textbox-input-box
    {
        margin-top: 12px !important;
        margin-left: 12px !important;
    }

    #bottomBox
    {
        margin-left: 60px !important;
        margin-top: -15px !important;
        margin-bottom: 40px !important;
    }

    #updateBox > vbox:nth-child(2) > hbox:nth-child(2)
    {
        margin-top: -25px !important;
        margin-bottom: 20px !important;
    }

    #trademark
    {
        margin-top: 16px !important;
        margin-bottom: -40px !important;
    }

    #leftBox
    {
        margin-top: 60px !important;
        margin-left: 80px !important;
        max-width: 200px !important;
        min-width: 200px !important;

    }

    /* Build ID about Dialog css, Text mittig.*/

    #rightBox textarea
    {
        background-color: white !important;
        color: black !important;
        text-align: center !important;
        margin-top: 30px !important;
        margin-bottom: 10px !important;
        min-width: 715px !important;
        min-height: 70px !important;
    }

    #icons > .icon
    {
        margin-top: 8px !important;
    }

    #updateButton
    {
        appearance: none !important;
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index1.gif') 
        no-repeat !important;
        background-color: gainsboro !important;
        background-position: 13px 3px !important;
        min-width: 360px !important;
        padding-left: 30px !important;
        border-radius: 14px !important;
        border: 2px solid red!important;
        color: black !important;
    }

    #updateButton:hover
    {
        background-color: #b2edfa !important;
    }

    #updateButton .button-box
    {
        padding-top: 0 !important;
        padding-bottom: 0 !important;
        padding-start: 3px !important;
        padding-end: 3px !important;
    }


    #updateBox vbox description.text-blurb label.text-link
    {
        display: none !important;
    }

    [href='about:license']
    {
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index1.gif')
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 30px 0 70px !important;
        padding: 0 20px 0 40px !important;
        border: 2px solid dodgerblue !important;
        border-radius: 14px !important;
    }

    [href='about:license']:hover
    {
        background-color: #b2edfa !important;
    }

    [href='about:rights']
    {
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index3.gif')
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 29px 0 -30px !important;       
        padding: 0 20px 0 40px!important;
        border: 2px solid red!important;
        border-radius: 14px !important;
    }

    [href='about:rights']:hover
    {
        background-color: #b2edfa !important;
    } 
	
    label.bottom-link:nth-child(2),
    label.bottom-link:nth-child(3)
    {
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index4.png')
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 30px 0 30px!important;
        padding: 0 20px 0 40px !important;
        border: 2px solid green!important;
        border-radius: 14px !important;
    }
	
    label.bottom-link:nth-child(2):hover,
    label.bottom-link:nth-child(3):hover
    {
        background-color: #b2edfa !important;
    }

    [href='https://www.mozilla.org/?utm_source=firefox-browser&utm_medium=firefox-desktop&utm_campaign=about-dialog']
    {        
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/Fuchs2.png') 
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 -2px 0 -2px !important;
        padding: 0 15px 0 35px!important;
        border: 2px solid cadetblue !important;
        border-radius: 14px !important;
    }

    [href='https://www.mozilla.org/?utm_source=firefox-browser&utm_medium=firefox-desktop&utm_campaign=about-dialog']:hover
    {
        background-color: #b2edfa !important;
    }

    [href='about:credits']
    {
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index8.png') 
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 5px 0 5px !important;
        padding:0 15px 0 35px !important;
        border: 2px solid cadetblue !important;
        border-radius: 14px !important;
    }

    [href='about:credits']:hover
    {
        background-color: #b2edfa !important;
    }

    #contributeDesc > label:nth-child(1)
    {
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index10.png') 
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 3px 0 3px !important;
        padding: 0 15px 0 35px  !important;
        border: 2px solid cadetblue !important;
        border-radius: 14px !important;
    }

    #contributeDesc > label:nth-child(1):hover
    {
        background-color: #b2edfa !important;
    }

    #contributeDesc > label:nth-child(2)
    {
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index9.png') 
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 -2px  0 10px !important;
        padding: 0 15px 0 35px !important;
        border: 2px solid cadetblue !important;
        border-radius: 14px !important;
    }

    #contributeDesc > label:nth-child(2):hover
    {
        background-color: #b2edfa !important;
    }

    #releasenotes
    {
        background: gainsboro url('file:///g:/Martin/A_INSTALLATIONSDATEIEN/Downloads/Icons/index11.png') 
        no-repeat !important;
        background-position: 10px 3px !important;
        color: black !important;
        margin: 0 20px 0 15px !important;
        padding: 0 25px 0 30px !important;
        border: 2px solid cadetblue !important;
        border-radius: 14px !important;
        margin-top: 25px !important;
    }

    #releasenotes:hover
    {
        background-color: #b2edfa !important;
    }
	}