body {
    font-family: "Arial", sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #11213a;
}

section {
    text-align: center;
}

/* Logo in the top left */
.logo {
    position: absolute;
    top: 10px;
    left: 10px;
}

.calculator--title {
    font-size: 80px;
    color: #d7a62f;
    margin: 10px auto;
}

.calculator {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    gap: 5px;
    width: 420px;
    margin: 10px auto;
    background-color: #11213a;
}

.display {
    grid-column: span 4;
    background-color: #11213a;
    color: #d7a62f;
    font-size: 40px;
    text-align: right;
    padding: 20px;
    border: 2px solid #ecd7ba;
    box-shadow: 2px 2px 2px 2px #ecd7ba;
}

.button {
    font-family: "Permanent Marker", cursive;
    width: 100px;
    height: 100px;
    font-size: 60px;
    line-height: 100px;
    text-align: center;
    background-color: #11213a;
    color: #04c0b2;
    border: 2px solid #ecd7ba;
    box-shadow: 2px 2px 2px 2px #ecd7ba;
    cursor: pointer;
    transition: background-color 0.2s;
}

.button:hover {
    background-color: #3a506b;
}