.wow {
  visibility: hidden;
  overflow: hidden;
}
.header{
  position: fixed;
  z-index: 2;
  background-color: #FFFFFF;
  box-shadow: 0px 0px 5px 0px hsla(0,0%,0%,0.1);
}

@media screen and (max-width: 767px){
  .header{
    position: relative;
    box-shadow: 0px 0px 0px 0px hsla(0,0%,0%,0.1);
  }


}