.tox-tinymce {
    border-radius: 0 !important;
    border-color: #6b7280 !important;
}

.tox:not(.tox-tinymce-inline) .tox-editor-header {
    box-shadow: none !important;
    border-bottom: 1px solid #6b7280 !important;
}

.tox .tox-toolbar, 
.tox .tox-toolbar__overflow, 
.tox .tox-toolbar__primary
{
    background-image: none !important;
}


/* Stop Redbrick breaking margins on TinyMCE toolbars inside dialogs */
.rb-dialog__inner .rb-dialog__content .tox-toolbar__group {
    margin-top: 0;
}