@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@100&display=swap');
*{
    font-family: "Poppins","sans-serif";
    margin:0;
    padding: 0;
    box-sizing: border-box;
}
body{
    min-height:100vh;
    width:100%;
    display:flex;
    align-items: center;
    justify-content: center;
    background:linear-gradient(45deg,#0a0a0a,#3a4452);
}
.container .calculator{
    background: transparent;
    border: 2px solid #717377;
    padding:20px;
    border-radius:16px;
    box-shadow: 0 3px 15px rgba(113,115,119,0.5);
}
.container .calculator .screen{
    width:320px;
    padding:24px;
    margin:10px;
    background: transparent;
    outline:none;
    border:none;
    font-size:45px;
    color: #ffffff;
    box-shadow: 0 3px 15px rgba(84,84,84,0.1);
    text-align: left;
    cursor:pointer;

}
.container .calculator .screen::placeholder{
    color:#fff;
    
}
.container .calculator .button{
    border:none;
    width:60px;
    height:60px;
    margin:10px;
    border-radius:50%;
    cursor:pointer;
    background-color: transparent;
    color:#fff;
    font-weight: bold;
    font-size:20px;
    box-shadow: -8px -8px 15px rgba(225,225,225,0.1);

}
.container .calculator .operator{
    color:#6dee0a;
}
.container .calculator .equals{
    background-color: #fb7c14;

}