.block_chambre {
    background-color: rgb(243, 243, 243); 
   /*width:50%;*/
    padding:1em; 
    margin-top:100px;
    color:rgb(15, 15, 15);
    border-radius: 8px;
    box-shadow: 6px 6px 8px 1px rgba(169, 169, 169, 0.1);
}

/*
.btn-rose {
    background-color: fuchsia;
    color: white;
}

.btn-bleue {
    background-color: blue; 
    color: white;
}

.btn-jaune {
    background-color: yellow; 
    color: black;
}
*/


@media (max-width: 800px)
{
    .block_chambre {
        /*background-color: black;*/
        width:100%;
        padding:1em;
        margin:auto;
        margin-top:100px;
        color:white;
    }
 
}