body {
    font-family: Arial, sans-serif;
    font-size: 16pt;
    color: #333;
}

footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 10px;
    background-color: #f1f1f1;
    border-top: 1px solid #ccc;
}

footer button {
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

#refreshBtn {
    width: 200px;
    background-color: #4CAF50;
    color: white;
}

#qrBtn img,
#shareBtn img {
    width: 24px;
    height: 24px;
}

#qrBtn img {
    width: 24px;
    height: 24px;
}

.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);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: #fefefe;
    margin: auto;
    padding: 20px;
    border: 1px solid #888;
    width: 90%;
    max-width: 300px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.modal-content img {
    width: 100%;
    height: auto;
}

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

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