$transition_duration-autoComplete_option-bg: var(--semi-transition_duration-faster);//选择器-选项-动画持续时间
$transition_function-autoComplete_option-bg: var(--semi-transition_function-easeIn);//选择器-选项-过渡曲线
$transition_delay-autoComplete_option-bg: var(--semi-transition_delay-fastest);//选择器-选项-延迟时间