.middle {
    width: 100%;
    background: url(../images/bg.png?4) no-repeat;
    background-position: center;
    background-size: cover;
    height: 1080px;
    position: relative;
}

.middle_wrapper {
    padding: 100px 0 80px 0;
}
.nav {
    width: 100%;
    position: absolute;
    top: 0;
    background: none;
}
.footer {
    position: absolute;
    bottom: 0;
    background: none;
}
.btn{
  position:absolute;
  bottom: 36%;
  left: 18%;
}
.btn a{
    display: inline-block;
    margin-left:24px;
}
.btn img{
  cursor: pointer;
}
.nav {
    background: none;
    box-shadow: none;
}
.nav ul li a {
    color: #fff;
}
.active {
    background: #fff;
    color: #F02420!important;
    
}