.masthead {
  height: 100vh;
  min-height: 500px;
  /*background-image: url('/img/tmpl/main.jpg');*/
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.overlay{
  height: 100vh;
  min-height: 500px;
  /*background: linear-gradient(45deg, rgba(46, 163, 34, .75), rgba(46, 163, 34, .5));*/
  background-size: cover;
}
section,.section{padding:6rem 0}