@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@500&display=swap');
*{
    margin:0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body{
    width:100%;
    height:100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(45deg, #0a0a0a,#3a4452);
}

.calculator{
    border: 1px solid #717371;
    padding:25px;
    border-radius: 16px;
    background: transparent;
    box-shadow: 0px 3px 15px rgba(113,115,119,0.7);
}

input{
    width: 320px;;
    border:none;
    padding: 24px;
    margin:10px;
    background: transparent;
    box-shadow:0px 3px 15px rgba(84,84,84,0.2);
    font-size: 45px;
    text-align: right;
    cursor: pointer;
    color: #ffffff;
}

:-ms-input-placeholder{
    color:#ffffff;
}

button{
    border: none;
    width:60px;
    height: 60px;
    margin: 10px;
    border-radius: 50%;
    background: transparent;
    color:#ffffff;
    font-size: 20px;
    box-shadow: -8px -8px 15px rgba(255, 255, 255, 0.2);
    cursor: pointer;
}

.btn{
    background-color: #fb7c14; 
}

.operator{
    color: aqua;
}