body
{
    margin:0;
    display: flex;
    justify-content: center;
    align-items: center;    
    height: 100vh;
}

button
{
    width: 80px;
    height: 80px;
    border: none;
    border-radius: 50px;
    background-color:darkgray;
    color: black;
    font-size: 50px;
    font-weight: bold;
}

#Calculator
{
    background-color: rgb(68, 68, 68);
    max-width: 400px;
    border-radius: 20px;
    overflow: hidden;
}

#display
{
    width:100%;
    padding: 20px;
    font-size: 50px;
    color: white;
    border: none;
    background-color:rgb(68, 68, 68);
    text-align: left;
}

#keys
{
display: grid;
grid-template-columns: repeat(4,1fr);
gap:10px;
padding: 20px;
}

.operators
{
    background-color: rgb(195, 145, 17);
}

.operators:hover
{
    background-color: rgb(195, 120, 0); 
}

.operators:active
{
    background-color: rgb(195, 90, 0);
}

.numpers:hover
{
    background-color: rgb(212, 211, 200); 
}

.numpers:active
{
    background-color: rgb(140, 140, 137);   
}