*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Roboto", sans-serif;
    font-optical-sizing: auto;
    font-weight: 500;
    font-style: normal;
    font-variation-settings:
        "wdth" 100;
}
body{
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(45deg,#0a0a0a, #3a4452);
}

.calculator{
    border: 1px solid #717377;
    padding: 20px;
    border-radius: 16px;
    background: transparent;
    box-shadow: 0px 3px 15px rgba(113,115,119,0.5);

}

input{
    width: 320px;
    border: none;
    padding: 24px;
    margin: 10px;
    background: transparent;
    box-shadow: 0px 3px 15px rgba(84,84,84,0.1);
    font-size: 40px;
    text-align: right;
    cursor: pointer;
    color: #ffffff;
}

input::placeholder{
    color: #ffffff;
}

button{
    border: none;
    width: 60px;
    height: 60px;
    margin: 10px;
    border-radius: 50%;
    background: rgba(171, 96, 63, 0.13);
    color: #ffffff;
    font-size: 20px;
    box-shadow: -8px -8px 15px rgba(225,225,225,0.1);
    cursor: pointer;
}
button:hover{
    background: rgba(238, 230, 227, 0.13);
}
.equalBTn{
    background-color: rgb(255, 140, 0) ;
    font-weight: 600;
}
.equalBTn:hover{
    background-color: rgb(200, 85, 14);
}

.operator{
    color: #6dee0a;
    background: rgba(20, 19, 19, 0.411);
}