SillyTavern/public/scripts/extensions/tts/style.css

#tts_media_control {
    /* order: 100; */
    /*     width: 40px;
    height: 40px;
    margin: 0;
    padding: 1px; */
    outline: none;
    border: none;
    cursor: pointer;
    /*     transition: 0.3s;
    opacity: 0.7; */
    display: flex;
    align-items: center;
    /* justify-content: center; */

}

#ttsExtensionMenuItem {
    transition: 0.3s;
    opacity: 0.7;
}

#ttsExtensionMenuItem:hover {
    opacity: 1;
    filter: brightness(1.2);
}

#tts_media_control:hover {
    opacity: 1;
    filter: brightness(1.2);
}

.voice_preview {
    margin: 0.25rem 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.voice_preview .voice_name {
    text-align: left;
    flex: 1;
}

.voice_preview .voice_lang {
    width: 4rem;
    text-align: left;
}

.voice_preview .fa-play {
    cursor: pointer;
}

.tts-button {
    margin: 0;
    outline: none;
    border: none;
    cursor: pointer;
    transition: 0.3s;
    opacity: 0.7;
    align-items: center;
    justify-content: center;

}

.tts-button:hover {
    opacity: 1;
}

.tts_block {
    display: flex;
    align-items: center;
    column-gap: 5px;
    flex-wrap: wrap;
}