ul{
    list-style: none;
    display: flex;
    flex-direction: column;
}

.calcul{
    border:1px solid rgb(151, 151, 151);
    border-radius: 7px;
    width: 40rem;
    height: 41rem;
    margin-right: 50px;
}

.calcul__head{
    background-color: black;
    color: white;
    width: 641px;
    height: 6rem;
    font-size: 5rem;
    text-align: right;
}

.calcul__number, .calcul__dot {
    width: 6rem;
    height: 4rem;
    margin: 23px 25px;
    border-radius: 7px;
    font-size: 2rem;
    border: 1px solid black;
}

.calcul__reset{
    width: 6rem;
    height: 4rem;
    margin: 23px 25px;
    background-color: #F0595F;
    color: white;
    border-radius: 7px;
    font-size: 2rem;
    border: 1px solid black;
}

.calcul__operator{
    width: 6rem;
    height: 4rem;
    margin: 23px 25px;
    color: #2e86c0;
    border-radius: 7px;
    font-size: 2rem;
    border: 1px solid black;
}

.calcul__total{
    width: 6rem;
    height: 394px;
    background-color: #2e86c0;
    color: white;
    border-radius: 7px;
    font-size: 2rem;
    border: 1px solid black;
    float: right;
    clear: both;
    margin-right: 40px;
    margin-top: 25px;
}

body {
    display: flex;
}