header{
  width: 100%;
  height: 100%;
}

.topbar{
  height: 70px;
  margin: auto;
}

.nav-logo{
  display: inline-block;
  width: 145px;
  height: 70px;
  margin-right: 70px;
}

.nav-logo a{
  display: inline-block;
  width: 145px;
  height: 56px;
  margin-top: 5px;
}

.topbar ul{
  display: inline-block;
  vertical-align: top;
}

.nav-item{
  display: inline-block;
  margin-right: 70px;
  height: 70px;
  box-sizing: border-box;
}

.nav-item a{
  color: #B0B0B0;
  line-height: 70px;
  display: block;
}

.nav-item:hover a{
  color: black;
}

.nav-item:hover,.active{
  border-bottom: 3px black solid;
  box-sizing: border-box;
}