* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #121212;
    color: #fff;
    height: 100vh;
    margin: 0;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/network.gif') no-repeat center center fixed;
    background-size: cover;
    opacity: 0.15;
    z-index: -1;
}

.back {
      background: #2c2c2c;
      border-radius: 15px;
      box-shadow: 0 0 15px rgba(69, 48, 255, 0.603);
      padding: 20px;
      width: 300px;
      margin: 20px;
      text-align: center;
    }