Code CSS and JS

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
    $('.lire-plus').on('click', function(event) {
        event.preventDefault();
        var $this = $(this);
        $this.toggleClass('contenu-cache');
        $this.closest('.zone-texte').find('.lire-moins, .texte-openclose').toggleClass('contenu-cache');
    });

    $('.lire-moins').on('click', function(event) {
        event.preventDefault();
        var $this = $(this);
        $this.toggleClass('contenu-cache');
        $this.closest('.zone-texte').find('.lire-plus, .texte-openclose').toggleClass('contenu-cache');
    });
});
</script>

<style>
.contenu-cache{
    display: none;
}
</style>