.container {
    max-width: 400px;
    margin: 10vh;
    box-shadow:0px 0px 43px 17px green ;
}

#display{
    text-align: right;
    height: 70px;
    line-height: 70px;
    padding: 16px 8px;
    font-size: 25px; 

}
.buttons{
    display: grid;
    border-bottom: 1px solid lightblue;
    border-left: 1px solid lightblue;
    grid-template-columns: 1fr 1fr 1fr 1fr;
}

.buttons > div {
    border-top: 1px solid lightblue;
    border-right: 1px solid lightblue;

}

.button{
    border: 0.5px solid lightblue;
    line-height: 100px;
    text-align: center;
    font-size: 25px;
    cursor: pointer;
}
#equal{
    background-color: blueviolet;
    color: aliceblue;
}

.button:hover{
    background-color: grey;
    color: white;
    transition:0.5s ease-in-out;
}