html,

.body{
    overflow-x: hidden;
    background-color: rgb(0, 0, 0);
}
.main .header{
    height: 1080px;
    background: url(../img/bg_2.jpg)center top no-repeat ;
    background-size:cover;
    position: relative;
}

.main .header .logobox{
  width: 100%;
  padding-top: 40%;
}
.main .header .logobox #title{
  width: 30%;
  margin: 0 auto;
  padding-left: 30px;
  position: relative;
}

.main .header .logobox #title img{
  width: 100%;
}
.main .header .logobox #btn {
    width: 13%;
    margin: 0 auto;
    position: relative;
    top: 76%;
    display: none;
}
.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: 1.3;
  margin-top: 2px;
}
@media screen and (max-width: 768px) {
  .main .header .logobox {
    padding-top: 80%;
  }
  .main .header .logobox #title {
    width: 50%;
  }
  .main .footer #footercopy {
    height: auto;
    padding: 20px 0;
  }
  .main .footer #footercopy .con  {
    width: 350px;
  }
  .main .footer #footercopy .con img {
    width: 120px;
  }
}
@media screen and (max-width: 580px) {
  .main .footer #footercopy {
    display: block;
    overflow: hidden;
  }
  .main .header {
    height: 765px;
  }
  .main .header .logobox {
    padding-top: 100%;
  }
  .main .footer #footercopy .con
    {
    width: 100%;
    display: flex;
    float: none;
    margin-bottom: 30px;
    justify-content: center;
    
  }
}