body{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: white;
    text-align: center;
    background: linear-gradient(to bottom right, #6B4423 0%, #3E2723 100%);
    font-family: cursive;
    min-height: 100vh;
;
}
.calculator{
    border: 3px solid #967259;
    background-color: #4E342E;
    border-radius: 30px;
    padding: 20px;
    align-items: center;
    font-family: cursive;
    background: linear-gradient(to bottom right, #4E342E 0%, #382521 100%);
}
.screen{
    text-align: right;
    min-height: 60px;
    max-width: 225px;
    background-color: #38220f;
    color: #ffffff;
    font-size: 40px;
    border-radius: 8px;
    padding: 20px;
    border: 2px solid #967259;
    overflow-wrap:break-word;
}
.buttons{
    display: grid;
    padding-top: 10px;
    grid-template-columns: repeat(4, 1fr);
    gap:10px
}
button{
    font-size: 20px;
    border-radius: 5px;
    background-color: #5A4638;
    color: #EFEBE9;
    text-decoration-color: #C89F76;
    width: 60px;
    height: 60px;
}

button:nth-child(4),
button:nth-child(8),
button:nth-child(12),
button:nth-child(16),
button:nth-child(20){
    background-color: #D4A574;
    font-weight: bold;
}

button:hover{
    cursor: pointer;
    background-color: #745a48;
    transform: translateY(-2px) ;
}