body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #f0f4f8, #d9e2ec);
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
}

#game-board {
    max-width: 600px;
    margin: 70px auto 50px;
    padding: 20px;
    text-align: center;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-size: 2em;
    margin-bottom: 10px;
}

#instructions {
    font-size: 1em;
    margin-bottom: 20px;
    color: #555;
}

#donor-input, #submit-button, #new-game-button {
    margin: 10px 0;
    padding: 10px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
}

#donor-input {
    width: 80%;
    border: 2px solid green;
    background-color: #e6f2ff;
    padding: 10px;
}


#submit-button, #new-game-button {
    background-color: #007bff;
    color: white;
    cursor: pointer;
}

footer {
    background: linear-gradient(135deg, #f0f4f8, #d9e2ec);
    padding: 10px;
    text-align: center;
}

footer p {
    font-size: 0.9em;
    margin: 0 0 10px;
}

footer p:last-child {
    margin-bottom: 0;
}

@media (max-width: 600px) {
    #game-board {
        margin: 50px auto 30px;
    }
}

#modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
    padding-top: 60px;
}

#modal-content {
    background-color: #fff;
    margin: 5% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 600px;
    border-radius: 10px;
}

#close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

#close:hover, #close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}