JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="styles.css">
    <title>Glowing GIF Block</title>
</head>
<body>
    <div class="gif-container">
              <div class="blur-circle"></div>
        <img src="https://media.giphy.com/media/vyTnNTrs3wqQ0UIvwE/giphy.gif">

    </div>
</body>
</html>

CSS

body {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    background-color: #03356F;
}

.gif-container {
    position: relative;
    width: 450px;
    height: 450px;
    overflow: hidden;
    border-radius: 50%;
            filter: blur(35px);
}


img {
    width: 450px;
    height: 450px;
    object-fit: cover;
    border-style: none;
    overflow: clip;
  z-index: -1;


}
    .blur-circle {
    background: url(https://media.giphy.com/media/vyTnNTrs3wqQ0UIvwE/giphy.gif) no-repeat center center;
    background-size: cover;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    width: 450px;
    height: 450px;
    }