body,html {
  background-image: url("zamkowa.jpg");
  min-height: 100%;
  min-width: 100%;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center; 
  position: fixed;
}

p {
  font-family: Helvetica, sans-serif;
  font-weight: normal;
  letter-spacing: 0.2px;
  text-align: center;
}

h1 {
  font-family: Helvetica, sans-serif;
  font-weight: normal;
  letter-spacing: 0.4px;
  text-align: center;
}

.m-top {
  padding-top: 40px;
}

.full-width {
  width: 100%;
  padding-bottom: 24px;
  padding-top: 6px;
}

.centered {
  padding-bottom: 60px;
  position: fixed;
  top: 50%;
  left: 50%;
  /* bring your own prefixes */
  transform: translate(-50%, -50%);
}

a:link {
  color: black;
  background-color: transparent;
  text-decoration: none;
}

a:visited {
  color: black;
  background-color: transparent;
  text-decoration: none;
}

a:hover {
  color: #004d00;
  background-color: transparent;
  text-decoration: none;
}

a:active {
  color: black;
  background-color: transparent;
  text-decoration: none;
}