* {
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
}
@media screen and (min-width: 1025px) {
    body {
        background: rgb(129, 155, 190) url(../image/gslxtfc1.jpg);
        background-attachment: fixed;
        background-size: cover;
        -webkit-background-size: cover;
        -o-background-size: cover;
    }
    .container {
        position: absolute;
        top: 80px;
        left: 100px;
        right: 100px;
        bottom: 80px;
        background-size: cover;
        -webkit-background-size: cover;
        -o-background-size: cover;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        box-shadow: 0 50px 50px rgba(0, 0, 0, 0.8),
            0 0 0 100px rgba(0, 0, 0, 0.3);
    }
    .container h2 {
        text-align: center;
        font-size: 10em;
        line-height: 0.7em;
        color: #ffffff;
        margin-top: -80px;
    }
    .container h2 span {
        display: block;
        font-weight: 300;
        letter-spacing: 6px;
        font-size: 0.2em;
    }
    .countdown {
        display: flex;
        margin-top: 50px;
    }
    .countdown div {
        position: relative;
        width: 100px;
        height: 100px;
        line-height: 100px;
        text-align: center;
        background: #333;
        color: #fff;
        margin: 0 15px;
        font-size: 3em;
        font-weight: 500;
        border-radius: 10px 10px 0 0;
    }
    .countdown div:before {
        content: '';
        position: absolute;
        bottom: -30px;
        left: 0;
        width: 100%;
        height: 35px;
        background: #b00000;
        color: #ffffff;
        font-size: 0.35em;
        line-height: 35px;
        font-weight: 300;
        border-radius: 0 0 10px 10px;
    }
    .countdown #day:before {
        content: '天';
    }
    .countdown #hour:before {
        content: '时';
    }
    .countdown #minute:before {
        content: '分';
    }
    .countdown #second:before {
        content: '秒';
    }
}
canvas {
    width: 100%;
    height: 100%;
}
::-webkit-scrollbar {
    display: none;
}
#btn{
  margin: 40px;
  width: 100px;
  height: 30px;
  background: pink;
  text-align: center;
  color: darkred;
  line-height: 30px;
}