html,
body {
  width: 100%;
  height: 100%;
}
body {  
  color: #fff;
  font-family: 'Roboto', Arial, Helvetica, sans-serif;
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
  text-align: center;
  overflow: hidden;
  background-repeat: no-repeat;
  background-size: contain;
  background: #0047AB;
  background: -webkit-linear-gradient(to bottom, #0047AB, #0CAFFF);
  background: linear-gradient(to bottom, #0047AB, #0CAFFF); 
}
.cover-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: auto;
}
.container {
  --bs-gutter-x: 1.5rem;
  --bs-gutter-y: 0;
  width: 100%;
  padding-right: calc(var(--bs-gutter-x) * 0.5);
  padding-left: calc(var(--bs-gutter-x) * 0.5);
  margin-right: auto;
  margin-left: auto;
}
@media (min-width: 576px) { .container { max-width: 540px; } }
@media (min-width: 768px) { .container { max-width: 720px; } }
@media (min-width: 992px) { .container { max-width: 960px; } }
@media (min-width: 1200px) { .container { max-width: 1140px; } }
@media (min-width: 1400px) { .container { max-width: 1320px; } }

main {
  max-width: 48rem;
  margin: auto;
}
h1 {
  font-size: 7rem;
  font-weight: 300;
  line-height: 1.25;
  margin-bottom: .5em;
}
@media (max-width: 650px) {
  h1 { font-size: 4rem; }
}
.fw-bold {
  font-weight: 500;
}
.fs-sm {
  font-size: 0.75rem;
}
.text-shadow {
  text-shadow: 0 2px 1px rgba(0,0,0,.3);
}
.opacity-50 {
  opacity: .5;
}
.opacity-50:hover {
  opacity: 1;
}