/*渐显*/
@keyframes fade_in {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* 从下方上浮 */
@keyframes fade_in_up {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 向左滑入备用 */
@keyframes fade_in_left {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/*旋转+渐显+缩放入场*/
@keyframes fade_in_round {
    from {
        opacity: 0;
        transform: rotate(-270deg) scale(0.3);
    }

    50% {
        opacity: 1;
    }

    to {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
}

.fade_in_round {
    animation: fade_in_round 0.8s ease-out;
}

/*轻微摇晃*/
@keyframes shake_small {
    0% {
        transform: rotate(0deg) scale(0.98);
    }

    25% {
        transform: rotate(-5deg) scale(1);
    }

    50% {
        transform: rotate(0deg) scale(1.02);
    }

    75% {
        transform: rotate(5deg) scale(1);
    }

    100% {
        transform: rotate(0deg) scale(0.98);
    }
}