@font-face {
  font-family: 'NotoSerif';
  src: url('NotoSerif-Regular.ttf');
  font-weight: 400;
}

@font-face {
  font-family: 'NotoSerif';
  src: url('NotoSerif-Bold.ttf');
  font-weight: 700;
}

body, html {
  height: 100%;
  margin: 0;
  font-family: 'NotoSerif', serif;
}

b {
  font-weight: 700; /* użyje wariantu Bold */
}


.hero-image {
  background-image: linear-gradient(rgba(0, 0, 0, 0.0), rgba(0, 0, 0, 0.0)), url("baner.jpg");
  height: 40%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
font-family: NotoSerif;
}

.hero-text {
  text-shadow: 0px 0px 8px  #000,  0px 0px 8px  #000;
  text-align: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 22px;
}

.topnav {
  overflow: hidden;
  background-color: #333;
font-family: NotoSerif;
}

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 18px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #9b3443;
  color: white;
}

.topnav .icon {
  display: none;
}


/* Page Content */
.content { 
padding: 1% 20%;  
font-size: 21px;
font-family: NotoSerif;
}

@media screen and (min-width: 1400px) {
  div.content {
    padding: 1% 20%;
  }
}

@media screen and (max-width: 800px) {
  div.content {
    padding: 1% 2%;
  }

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}