.sentence {
    margin-bottom: 20px;
}

.rotating-word {
    display: inline-block;
}

@keyframes fade {
    0% { opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { opacity: 0; }
}

@keyframes slide {
    0% { transform: translateY(100%); opacity: 0; }
    10% { transform: translateY(0); opacity: 1; }
    90% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(-100%); opacity: 0; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-30px); }
    60% { transform: translateY(-15px); }
}

@keyframes zoom {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes flip {
    0% { transform: rotateY(0); }
    100% { transform: rotateY(360deg); }
}

@keyframes rotate {
    0% { transform: rotate(0); }
    100% { transform: rotate(360deg); }
}

@keyframes skew {
    0% { transform: skewX(0); }
    50% { transform: skewX(20deg); }
    100% { transform: skewX(0); }
}

@keyframes scale {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

@keyframes blur {
    0% { filter: blur(10px); opacity: 0; }
    100% { filter: blur(0); opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
    20%, 40%, 60%, 80% { transform: translateX(10px); }
}

.fade {
    animation: fade 1s ease-in-out infinite;
}

.slide {
    animation: slide 1s ease-in-out infinite;
}

.bounce {
    animation: bounce 2s infinite;
}

.zoom {
    animation: zoom 1s ease-in-out infinite;
}

.flip {
    animation: flip 1s infinite;
}

.rotate {
    animation: rotate 2s infinite linear;
}

.skew {
    animation: skew 2s infinite;
}

.scale {
    animation: scale 1s infinite;
}

.blur {
    animation: blur 1s ease-in-out infinite;
}

.shake {
    animation: shake 1s infinite;
}