body {
    background-color: #EDF7FF;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: "Roboto", sans-serif;
    font-weight: 400;
    font-style: normal;
    flex-direction: column;
}

.div-container {
    display: grid;
    background-color: white;
    width: 345px;
    height: 580px;
    grid-template-columns: 60px 60px 60px 60px;
    grid-template-rows: 60px 60px 60px 60px;
    gap: 25px;
    justify-content: space-around;
}

.center {
    display: grid;
    place-items: center;
    background-color: #EDF;
    font-size: 30px;
    text-align: center;
    border-radius: 10px;
}

.item1 {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    grid-column: 1 / span 4;
    grid-row: 1 / span 2;
    border-radius: 10px;
}

.item18 {
    grid-column: 1 / span 4;
    background-color: #0092FF;
    color: white;
}

.item17, .item13, .item9, .item5, .item1 {
    background-color: #C4D9E7;
}

.item2,.item3, .item4, .item6, .item7, .item8, .item10, .item11, .item12, .item14, .item15, .item16 {
    background-color: #F9FAFE;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

#result, #calculation {
    text-align: end;
    padding: 10px;
}

#result {
    font-family: "Roboto", sans-serif;
    font-weight: 900;
    font-style: normal;
    font-size: 40px;
    overflow-x: scroll;
    scrollbar-width: none;
}

#calculation {
    font-size: 23px;
    overflow-x: scroll;
    scrollbar-width: none;
}

::-webkit-scrollbar {
    display: none;
}

.item16, .item14 {
    background-color: #0092FF;
}

.item2:active {
    background-color: #0092FF;
}
.item3:active {
    background-color: #0092FF;
}
.item4:active {
    background-color: #0092FF;
}
.item5:active {
    background-color: #0092FF;
}
.item6:active {
    background-color: #0092FF;
}
.item7:active {
    background-color: #0092FF;
}
.item8:active {
    background-color: #0092FF;
}
.item9:active {
    background-color: #0092FF;
}
.item10:active {
    background-color: #0092FF;
}
.item11:active {
    background-color: #0092FF;
}
.item12:active {
    background-color: #0092FF;
}
.item13:active {
    background-color: #0092FF;
}
.item15:active {
    background-color: #0092FF;
}
.item17:active {
    background-color: #0092FF;
}
.item14:active {
    background-color: #C4D9E7;
}
.item16:active {
    background-color: red;
}
.item18:active {
    background-color: #C4D9E7;
}

footer a {
    text-decoration: none;
    color: #0092FF;
}

footer {
    margin-top: 20px;
}