.container.page-404 {
  background-color: #1f6779;
  min-height: 100lvh;
  background-image: url(../../images/about/about-first-section-header-alt-4.jpg);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 30px;
}
.container.page-404:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: black;
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}
.container.page-404 .banner-404 {
  z-index: 1;
}

.fill-btn {
  margin: 0 auto;
}
@media (max-width: 767px) {
  .fill-btn {
    width: -moz-fit-content;
    width: fit-content;
  }
}
@media (max-width: 565px) {
  .fill-btn {
    width: 100%;
    text-align: center !important;
  }
}