body {
    font-size: 16px;
}

#header {
    padding: 20px;
    background: radial-gradient(circle at 50% 85%, rgb(0, 67, 122) 0%, rgb(0, 30, 80) 100%);
    color: #ffffff;
    line-height: 1;
}

#last-update {
    font-size: 1.3rem;
    font-weight: bold;
}

#header button {
    background-color: rgb(0, 30, 80);
    color: #ffffff;
    border: 2px solid #ffffff;
    border-radius: 8px;
    padding: 10px 20px;
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
}

#header button:hover {
    background-color: #ffffff;
    color: rgb(0, 30, 80);
    border-color: rgb(0, 30, 80);
    transform: scale(1.05);
}

#header button:active {
    transform: scale(1);
    opacity: 0.9;
}