content-script.css

#-web-extension-ondoku-buttons {
    border: 1px solid #DDD;
    background-color: white;
    border-radius: 6px;
    padding: 3px;
    opacity: 0.9;
    z-index: 2147483647;
}

.-web-extension-ondoku-btn-group {
    text-align: center;
    width: 27px;
    height: 27px;
}

#-web-extension-ondoku-btn-play {
    display: inline-block;
    width: 27px;
    height: 27px;
}

#-web-extension-ondoku-btn-play img {
    width: 100%;
}

#-web-extension-ondoku-btn-play:hover {
    cursor: pointer;
}

#-web-extension-ondoku-btn-play:hover img {
    opacity: 0.5;
}

#-web-extension-ondoku-btn-stop {
    display: inline-block;
    width: 27px;
    height: 27px;
}

#-web-extension-ondoku-btn-stop img {
    width: 100%;
}

#-web-extension-ondoku-btn-stop:hover {
    cursor: pointer;
}

#-web-extension-ondoku-btn-stop:hover img {
    opacity: 0.5;
}