@media screen and (max-width:920px) {
    .header nav ul li a{
        font-size: 15px;
    }
    .main img{
        width: 600px;
    }
    .main{
        height: 80vh;
    }
    .content{
        width: 600px;
    }
    .content p{
        padding: 15px;
        font-size: 13px;
    }
    .cart{
        width: 180px;
        height: 250px;
    }
    .cart img{
            width: 180px;
            height: 130px;
            border-radius: 11px;
        }

        .formations .content div img{
            width: 200px;
        }
}