SortAlgoVisualiser/try.html at main · pravocodes/SortAlgoVisualiser · GitHub

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<!DOCTYPE html>
<html>

<head>
    <style>
        html {
            padding: 0;
            margin: 0;
            height: 100%;
            outline: none;
            background-color: brown;
        }

        body {

            border: 20px solid brown;
            position: relative;
        }

        .main {
            display: flex;
            height: 98vh;
            background-color: #ffffff;
        }

        #left {
            width: 50%;
            float: left;
            background-color: lightblue;
            border: 1px solid black;
            box-shadow: -4px 6px 8px rgba(0, 0, 0, .7);
        }

        #right {
            width: 50%;
            float: right;
            background-color: lightskyblue;
            border: 1px solid black;
            box-shadow: -4px 6px 8px rgba(0, 0, 0, .7);
        }

        @keyframes opengateLeft {
            100% {
                transform: translateX(-800px);
            }
        }

        @keyframes opengateRight {
            100% {
                transform: translateX(800px);
            }
        }


        button {
            height: 50px;
            width: 50px;
            border-radius: 50%;
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
        }

        #cover {
            position: fixed;
            width: 100%;
            height: 100%;
            background: brown;
        }

        @keyframes cover {
            0% {
                transform: scale(0);
            }

            100% {
                transform: scale(4);
            }
        }
    </style>


</head>

<body>
    <div class="main" id="enterbox">
        <div id="left"></div>
        <div id="right"></div>
    </div>
    <button id="btn" onclick="openAnimation()"></button>

    <div id="cover"></div>

    <script>
        function openAnimation() {
            var left = document.getElementById("left");
            var right = document.getElementById("right");
            var cover = document.getElementById("enterbox");

            left.style.animation = "opengateLeft 4s";
            right.style.animation = "opengateRight 4s";

            left.addEventListener('animationend', function () {
                left.style.display = 'none';

            });

            right.addEventListener('animationend', function () {
                right.style.display = 'none';
                cover.style.animation = "cover 2s forwards";
            });
            cover.addEventListener('animationend', function () {
                setTimeout(function () {
                    window.location.href = 'index.html';
                }, 500);
            });

            document.getElementById("btn").style.display = "none";
        }


    </script>

</body>

</html>