video-bubbles/src/renderer-process/css/svg-button.css

<img src="images/bubbles-logo.svg" alt="Bubbles logo" width="50%" />

.bubbles-button:focus {
    fill: #fff;
    outline: none;
}

.bubbles-button:hover {
    fill: #fff;
}

.bubbles-button-hidden {
    opacity: 0;
}

.bubbles-button-hidden:hover,
.bubbles-button-hidden:focus {
    opacity: 1;
}