body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(to bottom, navy,indigo);
    overflow: hidden;
  }
  
  .falling-items {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
  }
  
  .falling {
    position: absolute;
    font-size: 2rem; 
    opacity: 0.8;
    animation: fall 10s linear infinite;
    animation-delay: calc(-1s * var(--random-delay));
    left: calc(100% * var(--random-start)); 
    z-index: 2;
  }
  
  .snowflake {
    animation-duration: 12s;
  }
  
  .gift {
    animation-duration: 9s;
    font-size: 3rem; 
  }
  
  .chocolate {
    animation-duration: 7s;
    font-size: 2.5rem; 
  }
  
  @keyframes fall {
    0% {
      transform: translateY(-10px) rotate(0deg);
    }
    100% {
      transform: translateY(100vh) rotate(360deg);
    }
  }
  
  .background {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
  }
  
  .message {
    position: absolute;
    top: 10%;
    text-align: center;
    color: #ffffff;
    text-shadow: 3px 3px 5px #000;
  }
  
  .message h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 0 0 15px coral;
    animation: glow 1.5s ease-in-out infinite alternate;
  }
  
  .message p {
    font-size: 1.5rem;
    font-style: italic;
    text-shadow: 0 0 10px coral;
  }
  
  @keyframes glow {
    0% {
      text-shadow: 0 0 15px coral, 0 0 30px coral;
    }
    100% {
      text-shadow: 0 0 25px coral, 0 0 50px coral;
    }
  }
  
  .santa {
    position: absolute;
    bottom: 100px;
    left: -300px;
    animation: slide-left-to-right 15s linear infinite;
  }
  
  .santa img {
    width: 300px;
    filter: drop-shadow(0 0 25px #fff);
  }
  
  @keyframes slide-left-to-right {
    0% {
      transform: translateX(-100vw);
    }
    100% {
      transform: translateX(100vw);
    }
  }
  
  .forest {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    position: relative;
    padding: 0 10px;
  }
  
  .tree {
    position: relative;
    width: 80px;
    height: 120px;
    background: linear-gradient(to bottom, darkgreen, forestgreen);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    margin: 0 10px;
    box-shadow: 0 0 10px 5px #ffffff;
    animation: tree-shake 2s ease-in-out infinite alternate;
  }
  
  @keyframes tree-shake {
    0% {
      transform: rotate(0deg);
    }
    50% {
      transform: rotate(5deg);
    }
    100% {
      transform: rotate(-5deg);
    }
  }
  
  .tree:before,
  .tree:after {
    content: '';
    position: absolute;
    width: 70px;
    height: 100px;
    background: linear-gradient(to bottom, darkgreen, forestgreen);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    margin-top: -30px;
  }
  
  .tree:before {
    top: -50px;
    left: 5px;
  }
  
  .tree:after {
    top: -100px;
    left: 10px;
  }
  
  .tree:before,
  .tree:after {
    box-shadow: 0 0 15px coral;
  }
  
  .falling:nth-child(1) {
    --random-start: 0.1;
    --random-delay: 0;
  }
  .falling:nth-child(2) {
    --random-start: 0.2;
    --random-delay: 1;
  }
  .falling:nth-child(3) {
    --random-start: 0.3;
    --random-delay: 2;
  }
  .falling:nth-child(4) {
    --random-start: 0.4;
    --random-delay: 3;
  }
  .falling:nth-child(5) {
    --random-start: 0.5;
    --random-delay: 4;
  }
  .falling:nth-child(6) {
    --random-start: 0.6;
    --random-delay: 5;
  }
  .falling:nth-child(7) {
    --random-start: 0.7;
    --random-delay: 6;
  }
  .falling:nth-child(8) {
    --random-start: 0.8;
    --random-delay: 7;
  }