*{
    margin: 0;
    padding: 0;
}
h1
{
    margin-bottom: 100px;
    color: #fff;
    box-shadow:0 3px 15px rgba(139, 144, 130, 0.5);
}
body{
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(45deg,#0a0a0a, #3a4452);
}
.calculator
{
    border: 4px solid black ;
    padding: 20px;
    background: transparent;
    box-shadow: 0px 3px 15px rgb(113, 115, 110,0.5);
}

input
{
    border: 0;
    width:320px;
    padding: 20px;
    padding-left: 0%;
    margin: 10px;
    color: white;
    background: transparent;
    text-align: right;
    font-size: 40px;
    box-shadow: 0 3px 15px rgb(84, 84,84,0.1);
    cursor: pointer;
}
button{
    width: 60px;
    height: 60px;
    border: none;
    margin: 10px;
    background: transparent;
    border-radius: 50%;
    color: #fff;
    font-size: 25px;
    box-shadow: 0 3px 15px rgba(126, 124, 124, 0.5);
    cursor: pointer;
}
.equal
{
    background-color: orange;
}
.operator
{
    color: green;
    font-size: 25px;
}