html,

.body{
    overflow-x: hidden;
    background-color: rgb(0, 0, 0);
    position: relative;
}
.main {
    width: 100%;
    height: 100vh;
    background: url(../img/bg2.jpg)center top no-repeat ;
    background-size:cover;
    position: relative;
}
.main .header{
    width: 100%;
    height: 100vh;
    position: relative;
    display: block;
}
.main .header .logobox{
  width: 100%;
  height: 90vh;
  position: fixed;
}
.main .header .logobox #title{
  width: 26%;
  margin: 0 auto;
  top: 46vh;
  padding-left: 30px;
  position: relative;
}

.main .header .logobox #title img{
  width: 100%;
}
.main .header .logobox #btn {
    width: 13%;
    margin: 0 auto;
    position: relative;
    top: 51%;
}
.main .header .logobox #btn img {
    width: 100%;
}
.main .footer {
    clear: both;
    width: 100%;
    background-color: #000000;
    font-family: Arial, Helvetica, sans-serif;
  }
  .main .footer #footercopy {
    font-size: 12px;
    color: #ffffff;
    margin: 0 auto;
    position: relative;
    height: 90px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 4px;
  }
  .main .footer #footercopy .con {
    float: left;
    width: 420px;
    display: flex;
  }

  .main .footer #footercopy .con p {
    margin-top: 3px;
  }
  .main .footer #footercopy .con img {
    float: left;
    margin-right: 4px;
  }
  .main .footer #footercopy .con2 {
    clear: both;
    width: 100%;
    margin: 0 0px 19px -182px ;
  }
  .main .footer #footercopy .con2 img {
    width: 60.5%;
  }
  .main .footer #footercopy .grade {
    float: right;
    display: flex;
    align-items: center;
  }
  .main .footer #footercopy .grade img {
    float: left;
    padding: 10px;
  }
  .main .footer #footercopy .grade p {
    float: left;
    width: 100%;
    line-height: 1.2;
    margin-top: 2px;
  }