.un {
    width: 760px;
    height: 760px;
    margin: 20px;
    border: 20px solid white;
    padding: 145px 90px 130px 75px;
    background-color: blueviolet;
}
.deux {width: 595px;
    height: 570px;
    padding: 120px 95px 30px 95px;
    background-color: rgb(102, 49, 152);
    
}
.trois {
    width: 400px;
    height: 382px;
    padding: 105px 95px 85px 95px;
    background-color: rgb(148, 129, 166);


}
.quatre {
    width: 390px;
    height: 385px;
    background-color: rgb(213, 187, 237);

}