* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body, html {
            height: 100%;
            overflow: hidden;
        }
        .slideshow-container {
            position: relative;
            width: 100%;
            height: 100%;
        }
        .mySlides {
            display: none;
            width: 100%;
            height: 100%;
        }
        .mySlides img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .countdown {
            position: absolute;
            bottom: 5px;
            left: 0.5%;
            transform: translateX(-50%);
            color: white;
            font-size: 10px;
            background-color: rgba(0, 0, 0, 0.5);
            padding: 2.5px 5px;
            border-radius: 5px;
        }
        .fade {
            animation: fadeinout 65s infinite;
        }
        @keyframes fadeinout {
            0% { opacity: 0; }
            1.5% { opacity: 1; }
            98.5% { opacity: 1; }
            100% { opacity: 0; }
        }