* {
    margin: 0;
    padding: 0;
    font-family: cursive;
    box-sizing: border-box;
}
.container {
    width: 100%;
    height: 100vh;
    background:linear-gradient(black,blue);
    display: flex;
    align-items: center;
    justify-content: center;
}
.calculator {
    background: linear-gradient(rgb(231, 98, 120), rgb(243, 118, 181));
    padding: 20px;
    border-radius: 10px;
    border-style:solid;
    border-color: black;
    border-width: 40px;
}
.calculator form input {
   border: 0;
    outline: 0;
    width: 60px;
    height: 60px;
    border-radius: 10px;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.1), 5px 5px 15px rgba(0, 0, 20, 0.2);
    background: transparent;
    font-size: 20px;
    color: navy;
    cursor: pointer;
    margin: 10px;
}

form .display{
    display: flex;
    justify-content: flex-end;
    margin: 20px 0;
}

form .display input{
    text-align: right;
    flex: 1;
    font-size: 45px;
    box-shadow: none;
}
form input.equal {
    width: 145px;
}
form input.operator {
    color:rgb(89, 10, 235);
}