#blacklist-wrapper {
    text-align: center;
    margin: 30px auto;
    position: relative;
    width: 860px;
    height: 300px;
}
#blacklist-wrapper h2 {
    font-size: 24px;
    margin-bottom: 10px;
}
#blacklist-wrapper .highlight {
    color: red;
    font-weight: bold;
}
#blacklist-canvas {
    border: 3px solid #333;
    border-radius: 12px;
    display: block;
}
#blacklist-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 860px;
    height: 300px;
    pointer-events: none;
}
#blacklist-overlay .highlighted {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    background-color: white;
    border: 3px solid red;
    box-shadow: 0 0 25px red;
    border-radius: 12px;
    font-weight: bold;
    font-size: 20px;
    text-align: center;
    color: red;
    max-width: 840px;
}