MediaWiki:Edittools.css

.edittools div.mw-collapsible {
	padding: 0;
    display: inline;
}

#edittools-description {
	margin-top: 1em;
	margin-bottom: 0.7em;
}

.edittools .mw-collapsible-toggle-default::before, .edittools .mw-collapsible-toggle-default::after {
    content:'' !important;
}

.edittools .mw-collapsible-toggle-default span {
    background-color: var(--background-color-8);
    padding: 0 4px;
    border-radius: 10px;
    margin-left: 5px;
    font-weight: 700;
    color: var(--color-base);
    
    :hover {
        background-color: var(--background-color-9);  
    }
}