#post-page #top {
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  background-color: gray;
  height: 300px;
  height: 33vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center; }
  #post-page #top .mask {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .5);
    z-index: 1; }
  #post-page #top .title {
    position: relative;
    z-index: 2;
    color: white; }
  #post-page .post-content {
    padding: 50px 0; }