.interest-message {
    display: none;
    max-width: 720px;
    margin: 24px auto 0;
    padding: 18px 20px;
    border: 1px solid #00ff66;
    border-radius: 8px;
    background: #0c1712;
    color: #ffffff;
    line-height: 1.55;
}

.interest-message.visible {
    display: block;
}