*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    max-width: 100vw;
    height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, Helvetica, sans-serif;
    background-image: linear-gradient(to top, #a18cd1 0%, #fbc2eb 100%);

}
.calculatrice{


background: black;
display: flex;
flex-direction: column;
padding: 15px;
border-radius: 5px;
box-shadow: 0 5px black;


}


.ecran{
width: 100%;
height: 100px;
background-color: #a8a8a8;
margin-bottom:15px ;
display: flex;
flex-direction: flex-end;
align-items: flex-end;
padding: 5px;
font-size: 25px;

}
.touche{
    display: grid;
    grid-template-columns: repeat(4,50px);
    grid-template-rows:repeat(5,50px) ;
    grid-gap:7px;
}
button{

    border: none;
    outline: none;
    border-radius: 5px;
    background-color: #f7f7f7;
    box-shadow: 0 3px #a8a8a8;
font-style: 18px;
}
button:active{
    box-shadow: 0 1px #a8a8a8;
    transform: translateY(2px);

}
button[data-key="8"]{
    background-color: orange;
    font-weight: bold;
    color: white;
}
button[data-key="13"]{
    grid-column: span 2;
    background-color:greenyellow;
    font-weight: bold;
    color: white;
    font-size: 35px;
}