Animated Buttons in CSS

<h1>Animated Buttons</h1>

<div class="button-container">
  <a href="#" class="btn btn-slide">Slide Effect</a>
  <a href="#" class="btn btn-glow">Glow Effect</a>
  <a href="#" class="btn btn-border">Border Fill</a>
  <a href="#" class="btn btn-ripple">Ripple Wave</a>
  <a href="#" class="btn btn-gradient">Gradient Shift</a>
  <a href="#" class="btn btn-flip">3D Flip</a>
  <a href="#" class="btn btn-pulse">Pulse Beat</a>
  <a href="#" class="btn btn-shine">Shine Sweep</a>
</div>

 * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 40px 20px;
        }

        h1 {
            color: white;
            font-size: 2.5rem;
            font-weight: 300;
            margin-bottom: 3rem;
            text-align: center;
        }

        .button-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            max-width: 900px;
            width: 100%;
        }

        .btn {
            padding: 18px 40px;
            font-size: 16px;
            font-weight: 500;
            text-decoration: none;
            color: white;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            display: inline-block;
            position: relative;
            overflow: hidden;
        }

        /* Button 1: Slide Background */
        .btn-slide {
            background: #ff6b6b;
            z-index: 1;
        }

        .btn-slide::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: #ee5a52;
            z-index: -1;
            transition: left 0.4s ease;
        }

        .btn-slide:hover::before {
            left: 0;
        }

        .btn-slide:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(255, 107, 107, 0.4);
        }

        /* Button 2: Glow Effect */
        .btn-glow {
            background: #4ecdc4;
            box-shadow: 0 0 10px rgba(78, 205, 196, 0.3);
        }

        .btn-glow:hover {
            box-shadow: 0 0 30px rgba(78, 205, 196, 0.8),
                        0 0 60px rgba(78, 205, 196, 0.6);
            transform: scale(1.05);
        }

        /* Button 3: Border Animation */
        .btn-border {
            background: transparent;
            border: 2px solid #f7b731;
            color: #f7b731;
            position: relative;
        }

        .btn-border::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 0;
            height: 100%;
            background: #f7b731;
            transition: width 0.4s ease;
            z-index: -1;
        }

        .btn-border:hover {
            color: white;
        }

        .btn-border:hover::before {
            width: 100%;
        }

        /* Button 4: Ripple Effect */
        .btn-ripple {
            background: #a29bfe;
        }

        .btn-ripple::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s ease, height 0.6s ease;
        }

        .btn-ripple:hover::before {
            width: 300px;
            height: 300px;
        }

        /* Button 5: Gradient Shift */
        .btn-gradient {
            background: linear-gradient(90deg, #fd79a8 0%, #fdcb6e 100%);
            background-size: 200% 100%;
            animation: gradient-shift 3s ease infinite;
        }

        @keyframes gradient-shift {
            0%, 100% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
        }

        .btn-gradient:hover {
            animation-play-state: paused;
            transform: scale(1.08);
            box-shadow: 0 8px 20px rgba(253, 121, 168, 0.5);
        }

        /* Button 6: 3D Flip */
        .btn-flip {
            background: #00b894;
            transform-style: preserve-3d;
            transition: transform 0.6s ease;
        }

        .btn-flip:hover {
            transform: rotateX(360deg);
            box-shadow: 0 10px 30px rgba(0, 184, 148, 0.5);
        }

        /* Button 7: Pulse Animation */
        .btn-pulse {
            background: #e17055;
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(225, 112, 85, 0.7);
            }
            50% {
                transform: scale(1.05);
                box-shadow: 0 0 0 15px rgba(225, 112, 85, 0);
            }
        }

        .btn-pulse:hover {
            animation-play-state: paused;
        }

        /* Button 8: Shine Effect */
        .btn-shine {
            background: #6c5ce7;
            position: relative;
            overflow: hidden;
        }

        .btn-shine::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -100%;
            width: 50%;
            height: 200%;
            background: linear-gradient(90deg, 
                transparent, 
                rgba(255, 255, 255, 0.4), 
                transparent);
            transform: skewX(-20deg);
            transition: left 0.6s ease;
        }

        .btn-shine:hover::after {
            left: 150%;
        }

        @media (max-width: 768px) {
            .button-container {
                grid-template-columns: 1fr;
            }
            
            h1 {
                font-size: 2rem;
            }
        }