body , html {
    margin: 0px;
    padding: 0px;
    height: 100vh;
}
main {
    display: flex;
    flex-wrap: nowrap;
    padding: 15px;
    gap: 15px;
    background-color: antiquewhite;
    height: 100%;
}
.box-40 {
    width: 40%;
    background-color: salmon;
    padding: 15px;

}
.box-60 {
    width: 60%;
    gap: 15px;
    display: flex;
    flex-wrap: wrap;
}
.box-100 {
    width: 100%;
    display: flex;
    gap: 15px;
}
.box-50 {
    width: 50%;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}
.box-mitad-50 {
    background: rgb(199, 146, 245);
    padding: 15px;
}
.box-50:nth-child(1) {
    background-color: hotpink;
    padding: 15px;
}
.box-100:nth-child(1) {
    background-color: greenyellow;
    padding: 15px;

}