.theme-header{
    margin-top: -20px;
    margin-bottom: -20px;
}

@media screen and (max-width: 700px) {
  .theme-header {
    margin-top: -12px;
    margin-bottom: -12px;
  }
}
  
@media screen and (min-width:700px) and (max-width:1200px) {
  .theme-header {
    margin-top: -12px;
    margin-bottom: -12px;
  }
}