style.css

* {
    margin: 0;
    padding: 0;
    font-family: "Poppins", sans-serif;
    box-sizing: border-box;
  }
  .hero {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #2f363e;
    position: relative;
  }
  .box {
    position: relative;
    width: 800px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .clock {
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(40px);
    color: #6e7f92f6;
    z-index: 10;
  }
  .clock span {
    font-size: 80px;
    width: 110px;
    display: inline-block;
    text-align: center;
    position: relative;
  }
  .clock span::after {
    font-size: 16px;
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
  }
  #hrs::after {
    content: "HOURES";
    color: #0f0;
    font-weight: 600;
    margin-bottom: -10px;
  }
  #min::after {
    content: "MINS";
    color: #0ff;
    font-weight: 600;
    margin-bottom: -10px;
  }
  #sec::after {
    content: "SEC";
    color: #ff0;
    font-weight: 600;
    margin-bottom: -10px;
  }
  
  /*------Anemated Border---------*/
  .box::before {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-conic-gradient(
      from var(--a),
      #0f0,
      #ff0,
      #0ff,
      #f0f,
      #0ff
    );
    border-radius: 20px;
    animation: rotate 6s linear infinite;
  }
  .box::after {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-conic-gradient(
      from var(--a),
      #0f0,
      #ff0,
      #0ff,
      #f0f,
      #0ff
    );
    border-radius: 20px;
    animation: rotate 4s linear infinite;
    filter: blur(40px);
    opacity: 0.75;
  }
  .box style {
    position: absolute;
    inset: 4px;
    background: #2f363e;
    border-radius: 16px;
    color: #ff0;
    font-size: 20px;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  @property --a {
    syntax: "<angle>";
    inherits: false;
    initial-value: 0deg;
  }
  @keyframes rotate {
    0% {
      --a: 0;
    }
    0% {
      --a: -360deg;
    }
  }