body {
    font-family: 'Comic Sans MS', cursive, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f0f4f8;
    margin: 0;
}

.math-monkey-container {
    background-color: #d2f2c2;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.1);
    width: 350px;
    text-align: center;
    position: relative;
}

.jungle-text {
    font-size: 28px;
    color: #228B22;
    text-transform: uppercase;
    font-weight: bold;
    margin-bottom: 15px;
    transform: rotate(-5deg);
    text-shadow: 2px 2px #8B4513;
}

.monkey-avatar img {
    width: 100px;
    position: absolute;
    top: -50px;
    left: calc(50% - 50px);
}

#display {
    width: 100%;
    height: 50px;
    text-align: right;
    margin-bottom: 20px;
    padding: 10px;
    font-size: 24px;
    border: none;
    border-radius: 10px;
    background-color: #f0f0f0;
    box-shadow: inset 0px 0px 5px rgba(0, 0, 0, 0.1);
    box-sizing: border-box; /* Ensures padding does not affect the width */
}

.buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.btn {
    border: none;
    border-radius: 10px;
    padding: 20px;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0px 3px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.banana {
    background-color: #ffe135;
}

.banana:hover {
    transform: rotate(-10deg);
}

.coconut {
    background-color: #8B4513;
    color: white;
}

.jungle-vine {
    background-color: #228B22;
    color: white;
}

.jungle-vine:hover {
    background-color: #2E8B57;
}