webScroll/6_2p_scroll_trigger_animate_keyframe.html at main · p4css/webScroll · GitHub

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<!doctype html>
<html lang="en">

<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
        integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

    <title>keyframe testing</title>
    <style>
        .slide1 {
            animation: slide1 3s .3s infinite linear forwards;
        }

        .slide2 {
            animation: slide2 3s .3s infinite linear forwards;
        }

        .slide3 {
            animation: slide3 5s .3s infinite linear forwards;
        }


        @keyframes slide1 {
            0% {
                opacity: 0.5;
                transform: translateX(0%);
            }

            100% {
                opacity: 0.5;
                transform: translateX(-100%);
            }
        }

        @keyframes slide2 {
            0% {
                opacity: 0.5;
                transform: translateX(100%);
            }

            100% {
                opacity: 0.5;
                transform: translateX(0%);
            }
        }

        @keyframes slide3 {
            0% {
                opacity: 1;
                transform: translateX(0%);
            }

            50% {
                opacity: 0.5;
                transform: translateX(-50%)
            }

            100% {
                opacity: 1;
                transform: translateX(0%);
            }
        }
    </style>
</head>

<body>
    <div class="container-fluid" style="min-height:500px;background-color:gold">
        <h1>Banner here</h1>
        <p>min-height:500px</p>
    </div>
    <div class="container-fluid" style="min-height:1000px;background-color:beige;">
        <img class="slideanimate1" src="assets/img1302x200.png" style="width:200%;">
    </div>
    <div class="container-fluid " style="min-height:1000px;">
        <div>
            <img class="slideanimate1" src="assets/img1302x200.png" style="position:absolute;width:200%;">
            <img class="slideanimate2" src="assets/img1302x200.png" style="position:absolute;width:200%;">
        </div>
    </div>
    <div class="container-fluid" style="min-height:1000px;background-color:beige;">
        <img class="slideanimate3" src="assets/img1302x200.png" style="width:200%;">
    </div>
    <div class="container-fluid sticky-bottom text-center"
        style="background-color:dodgerblue;color:white;min-height: 100px">footer</div>


    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.4.1.min.js"
        integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"
        integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous">
    </script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"
        integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous">
    </script>
    <script>
        $(function () {
            $(window).scroll(function () {
                var winTop = $(window).scrollTop();
                var winh = $(window).height();

                $(".slideanimate1").each(function () {
                    var objpos = $(this).offset().top;
                    if (objpos < winTop + winh * 0.8) {
                        $(this).addClass("slide1");
                    }
                });
                $(".slideanimate2").each(function () {
                    var objpos = $(this).offset().top;
                    if (objpos < winTop + winh * 0.8) {
                        $(this).addClass("slide2");
                    }
                });
                $(".slideanimate3").each(function () {
                    var objpos = $(this).offset().top;
                    if (objpos < winTop + winh * 0.8) {
                        $(this).addClass("slide3");
                    }
                });

            });
        });
    </script>
</body>

</html>