*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Vibur', sans-serif;
}

body{
    width: 100%;
    width: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: black;
}

.calculator{
    border: 1px solid #717377;
    padding: 20px;
    border-radius: 16px;
    background: transparent;
    box-shadow: 0px 3px 15px rgba(113, 115, 114);
}

input{
    width: 320px;
    border: 0.2rem solid blueviolet;
    border-radius: 16px;
    padding: 24px;
    margin: 10px;
    background: transparent;
    box-shadow: 0px 3px 15px rgbs(84, 84, 84, 0.1);
    font-size: 40px;
    text-align: right;
    cursor: pointer;
    color: #fff;
    text-shadow:
    0 0 7px #fff, 
    0 0 10px #fff,
    0 0 21px #fff,
    0 0 42px #0fa,
    0 0 82px #0fa,
    0 0 92px #0fa,
    0 0 102px #0fa,
    0 0 151px #0fa;
}

input::placeholder{
    color: #ffffff;
}

button{
    border: 0.2rem solid blueviolet;
    width: 60px;
    height: 60px;
    margin: 10px;
    border-radius: 50%;
    background: transparent;
    color: #fff;
    font-size: 20px;
    box-shadow: -8px, -8px 15px rgba(255,255,255);
    cursor: pointer;
    text-shadow:
    0 0 7px #fff, 
    0 0 10px #fff,
    0 0 21px #fff,
    0 0 42px #0fa,
    0 0 82px #0fa,
    0 0 92px #0fa,
    0 0 102px #0fa,
    0 0 151px #0fa;
}

.equalBtn{
    background-color: #fb7c14;
}

.operator{
    color: #6dee0a;
}