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How to Create Animation Loading Bar using CSS ?

Last Updated : 09 Jul, 2020
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Loading Bar with animation can be created using HTML and CSS.

We will create a Loader that is the part of an operating system that is responsible for loading programs and libraries. The progress bar is a graphical control element used to visualize the progression of an extended computer operation, so here we use the progress bar as an animation in loader. We will create a loading bar using HTML and CSS properties.

HTML Code: In this section, we will design the basic structure of the HTML code.

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content=
        "width=device-width, initial-scale=1.0">

    <title>Loader Bar</title>
    
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <div class="loader">
        <div class="loading_1"></div>
        <div class="loading_2">Loading GfG...</div>
    </div>
</body>

</html>
CSS Code: In this section, we will use some CSS property to design the loading bar. We will use @keyframes which specifies animation code. The animation is created by gradually changing from one set of CSS styles to another. The changes in styles happen in percent using the keywords "from" (0%) and "to" (100%). We can change the set of CSS styles many times.

CSS 
<style>
    body {
        background-color: #262626;
        font-family: Lato, sans-serif;
    }

    .loader {
        width: 150px;
        margin: 150px auto 70px;
        position: relative;
    }

    .loader .loading_1 {
        position: relative;
        width: 100%;
        height: 10px;
        border: 1px solid yellowgreen;
        border-radius: 10px;
        animation: turn 4s linear 1.75s infinite;
    }

    .loader .loading_1:before {
        content: "";
        display: block;
        position: absolute;
        width: 0;
        height: 100%;
        background-color: yellowgreen;
        box-shadow: 10px 0px 15px 0px yellowgreen;
        animation: load 2s linear infinite;
    }

    .loader .loading_2 {
        position: absolute;
        width: 100%;
        top: 10px;
        color: green;
        font-size: 22px;
        text-align: center;
        animation: bounce 2s linear infinite;
    }

    @keyframes load {
        0% {
            width: 0%;
        }

        87.5% {
            width: 100%;
        }
    }

    @keyframes turn {
        0% {
            transform: rotateY(0deg);
        }

        6.25%,
        50% {
            transform: rotateY(180deg);
        }

        56.25%,
        100% {
            transform: rotateY(360deg);
        }
    }

    @keyframes bounce {

        0%,
        100% {
            top: 10px;
        }

        12.5% {
            top: 30px;
        }
    }
</style>
Complete Code: It is the combination of above two code section of HTML and CSS. In the following code, we have added the CSS code internally in the HTML code. html 
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content=
        "width=device-width, initial-scale=1.0">

    <title>Loader Bar</title>
    
    <style>
        body {
            background-color: #262626;
            font-family: Lato, sans-serif;
        }

        .loader {
            width: 150px;
            margin: 150px auto 70px;
            position: relative;
        }

        .loader .loading_1 {
            position: relative;
            width: 100%;
            height: 10px;
            border: 1px solid yellowgreen;
            border-radius: 10px;
            animation: turn 4s linear 1.75s infinite;
        }

        .loader .loading_1:before {
            content: "";
            display: block;
            position: absolute;
            width: 0;
            height: 100%;
            background-color: yellowgreen;
            box-shadow: 10px 0px 15px 0px yellowgreen;
            animation: load 2s linear infinite;
        }

        .loader .loading_2 {
            position: absolute;
            width: 100%;
            top: 10px;
            color: green;
            font-size: 22px;
            text-align: center;
            animation: bounce 2s linear infinite;
        }

        @keyframes load {
            0% {
                width: 0%;
            }

            87.5% {
                width: 100%;
            }
        }

        @keyframes turn {
            0% {
                transform: rotateY(0deg);
            }

            6.25%,
            50% {
                transform: rotateY(180deg);
            }

            56.25%,
            100% {
                transform: rotateY(360deg);
            }
        }

        @keyframes bounce {

            0%,
            100% {
                top: 10px;
            }

            12.5% {
                top: 30px;
            }
        }
    </style>
</head>

<body>
    <div class="loader">
        <div class="loading_1"></div>
        <div class="loading_2">Loading GfG...</div>
    </div>
</body>

</html>

Output: The following image shows the loading bar with animation.


N
nehaahlawat
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