img {
  max-width: 100%;
  height: auto;
}

.underline{z-index:1;}

.underline:after {
  /* z-index: 0; */
}

#mainbgsection {
  position: relative;
}

#mainbgsection:after {
  content: '';
  background: rgba(0,0,0,0.7);
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  position: absolute;
}

#mainNav:not(.navbar-shrink) {
  color: #FFF !important;
}

#mainNav:not(.navbar-shrink) a {
  color: #FFF !important;
}