body {
  padding-top: 70px;
}

.hidden {
  display: none !important;
}

.hero {
  min-height: calc(100vh - 70px);
  background:
    linear-gradient(rgba(0,0,0,.6), rgba(0,0,0,.6)),
    url("../images/hero-email-security.webp") center/cover no-repeat;
}