html,
        body {
            width: 100dvw;
            height: 100dvh;
            font-size: 16px;
            margin: 0;
        }
        body {
            background: url(./assets/bg.jpg) 50% 0 no-repeat;
            background-size: auto 100%;
        }
        @media (min-width: 980px)  {
            body {
                background-size: cover;
            } 
        }
        .container {
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .logo {
            width: 300px;
        }
        ul {
            list-style-type: none;
            padding: 0;
        }
        li a {
            position: relative;
            display: block;
            width: 250px;
            height: 70px;
            background: url(./assets/btn.png) 0 0/cover no-repeat;
            text-decoration: none;
            color: #000;
        }
        li p {
            line-height: 65px;
            text-align: center;
            font-size: 20px;
            font-weight: bold;
        }
        .copyright {
            font-size: 12px;
            margin-bottom: 8px;
            color: #8f8787;
        }





  @-webkit-keyframes snowflakes-fall {
    0% {top:-10%}
    100% {top:100%}
  }
  @-webkit-keyframes snowflakes-shake {
    0%,100% {-webkit-transform:translateX(0);transform:translateX(0)}
    50% {-webkit-transform:translateX(80px);transform:translateX(80px)}
  }
  @keyframes snowflakes-fall {
    0% {top:-10%}
    100% {top:100%}
  }
  @keyframes snowflakes-shake {
    0%,100%{ transform:translateX(0)}
    50% {transform:translateX(80px)}
  }
  .snowflake {
    color: #fff;
    font-size: 1em;
    font-family: Arial, sans-serif;
    text-shadow: 0 0 5px #000;
    position:fixed;
    top:-10%;
    z-index:9999;
    -webkit-user-select:none;
    -moz-user-select:none;
    -ms-user-select:none;
    user-select:none;
    cursor:default;
    -webkit-animation-name:snowflakes-fall,snowflakes-shake;
    -webkit-animation-duration:10s,3s;
    -webkit-animation-timing-function:linear,ease-in-out;
    -webkit-animation-iteration-count:infinite,infinite;
    -webkit-animation-play-state:running,running;
    animation-name:snowflakes-fall,snowflakes-shake;
    animation-duration:10s,3s;
    animation-timing-function:linear,ease-in-out;
    animation-iteration-count:infinite,infinite;
    animation-play-state:running,running;
  }
  .snowflake:nth-of-type(0){
    left:1%;-webkit-animation-delay:0s,0s;animation-delay:0s,0s
  }
  .snowflake:nth-of-type(1){
    left:10%;-webkit-animation-delay:1s,1s;animation-delay:1s,1s
  }
  .snowflake:nth-of-type(2){
    left:20%;-webkit-animation-delay:6s,.5s;animation-delay:6s,.5s
  }
  .snowflake:nth-of-type(3){
    left:30%;-webkit-animation-delay:4s,2s;animation-delay:4s,2s
  }
  .snowflake:nth-of-type(4){
    left:40%;-webkit-animation-delay:2s,2s;animation-delay:2s,2s
  }
  .snowflake:nth-of-type(5){
    left:50%;-webkit-animation-delay:8s,3s;animation-delay:8s,3s
  }
  .snowflake:nth-of-type(6){
    left:60%;-webkit-animation-delay:6s,2s;animation-delay:6s,2s
  }
  .snowflake:nth-of-type(7){
    left:70%;-webkit-animation-delay:2.5s,1s;animation-delay:2.5s,1s
  }
  .snowflake:nth-of-type(8){
    left:80%;-webkit-animation-delay:1s,0s;animation-delay:1s,0s
  }
  .snowflake:nth-of-type(9){
    left:90%;-webkit-animation-delay:3s,1.5s;animation-delay:3s,1.5s
  }
  .snowflake:nth-of-type(10){
    left:25%;-webkit-animation-delay:2s,0s;animation-delay:2s,0s
  }
  .snowflake:nth-of-type(11){
    left:65%;-webkit-animation-delay:4s,2.5s;animation-delay:4s,2.5s
  }