.sign-in-btn a {
    padding: 14px 32px;
    background-color: white;
    color: black;
    text-decoration: none;
    border-radius: 6px;
    font-family: Arial;
    font-size: 16px;
    font-weight: bold;
    border: 2px solid black;
    transition: all 0.3s ease;
}

.sign-in-btn a:hover {
    background-color: #f0f0f0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}