@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');
*{
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif; 
    box-sizing: border-box;
}
body{
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #101010;
    color: #fff;
}
.container{
    border: 1px solid #151515;
    border-radius: 15px;
    padding: 20px;
    background: transparent;
    box-shadow: 2px 2px 30px rgba(255, 255, 255, 0.2);
}
input{
    width: 300px;
    border: none;
    background: transparent;
    color: #fff;
    padding: 20px;
    margin: 10px;
    font-size: 40px;
    text-align: right;
    cursor: pointer;
}
input::placeholder{
    color: #fff;
}
button{
    border: none;
    height: 70px;
    width: 70px;;
    margin: 5px;
    background: transparent;
    border-radius: 15%;
    color: #fff;
    box-shadow: -5px 5px 15px rgba(255, 255, 255, 0.1);
    font-size: 20px;
    cursor: pointer;
}
.equal{
    background: #ff8330;
}
.operator{
    color: aqua;
}