Voir la source de MediaWiki:Common.css

/* Le CSS placé ici sera appliqué à tous les habillages. */

.page-Accueil .firstHeading {
    display: none;
}

@media (min-width: 720px) {
    .page-Accueil .two-col {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }
}

.page-Accueil .actus,
.page-Accueil .participer,
.page-Accueil .structures,
.page-Accueil .outils {
    border: solid 1px #e7e7e7;
    border-radius: 1em;
    padding: 1rem;
    width: 95%;
    padding: 5px;
    background-color: #f8f8f8;
    flex-basis: calc(50% - 10px);
    margin-bottom: 15px;
}

.page-Accueil .actus,
.page-Accueil .participer {
    text-align: center;
}

.lille {
    float: right;
}

.identite {
    border-radius: 1em;
    background-color: #E3FBFF;
    margin: 10px 10px;
    border: 1px #68C0C3 solid;
    width: 48%;
    padding: 10px;
    text-align: left;
}

.informations {
    border-radius: 1em;
    background-color: #FFE7D3;
    margin: 10px 10px;
    border: 1px #F3974A solid;
    width: 48%;
    padding: 10px;
    text-align: left;
}

.sign-up-button-hp {
    font-size: 15px;
    padding: 10px 15px;
    border: 1px solid #000;
    background-color: #80deff;
    margin-top: 25px;
    color: #000;
    font-weight: bold;
    font-family: arial;
    transition: all ease .2s;
}