/*按钮：关闭*/
/* [当鼠标移出时] */
#titleBarUi .closeButton{
    /* 过渡 */
    transition: transform 0.1s, background-color 0.1s;
    /* 颜色 */
    background-color: transparent;
    /* 变换 */
    transform: scale(1);
}
/* [当鼠标移入时] */
#titleBarUi .closeButton:hover{
    /* 颜色 */
    background-color: #e3e3e3;
}
/* [当鼠标按下时] */
#titleBarUi .closeButton:active{
    /* 变换 */
    transform: scale(0.75);
}

/*button: maximize*/
#titleBarUi .maximizeButton{
    transition: transform 0.1s, background-color 0.1s;
    background-color: transparent;
    transform: scale(1);
}
#titleBarUi .maximizeButton:hover{
    background-color: #e3e3e3;
}
#titleBarUi .maximizeButton:active{
    transform: scale(0.75);
}
#titleBarUi .maximizeButton.active{
    background-color: #e3e3e3;
}



/*按钮：设置*/
/* [当鼠标移出时] */
#titleBarUi .settingToggle{
    /* 过渡 */
    transition: transform 0.1s, background-color 0.1s;
    /* 变换 */
    transform: scale(1);
}
/* [当鼠标按下时] */
#titleBarUi .settingToggle:active{
    /* 变换 */
    transform: scale(0.85, 0.75);
}