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

    width: 100px;
    height: 100px;
    border-radius: 30px;
    background-color: rgba(56, 187, 143, 0.733);
    color:black;
    font-size: 3rem;
    font-weight: bold;
    border: none;
    cursor: pointer;
}
.buttons{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 25px;
}
#display{
    width:100%;
    border: none;
    padding: 20px;
    font-size: 5rem;
    text-align: left;
    background-color:rgba(206, 252, 237, 0.76) ;
    color:black ;
}
#calculator{
    font-family: Arial, Helvetica, sans-serif;
    background-color:rgb(97, 218, 177) ;
    border-radius: 15px;
    max-width: 500px;
    overflow: hidden;
}
button:hover{
    background-color: rgba(43, 117, 93, 0.733);
}
button:active{
    background-color: rgba(28, 80, 64, 0.733);
}
.operator{
    background-color: rgb(255, 217, 0);
}
.operator:hover{
    background-color: rgb(238, 255, 0)
}
.operator:active{
    background-color: rgb(255, 208, 0)
}