.header_bottom {
background-color: rgba(255, 255, 255, 0.7) !important;
}

@media only screen and (max-width: 1000px) {
  body.page .content {    
    margin-top: -100px !important;
  }
  body.page .header_bottom {    
    background-color: rgba(255,255,255,0) !important;
  }
}