* {
    
    box-sizing: border-box;
  }
  
  body {
    height: 100%;
    font-family: DynaPuff;
    color: white;
    text-align: center;
    overflow-x: hidden;
    scroll-behavior: smooth;
  }
  
  .prekryti {
    width: 100%;    
  }
  
  .nadpis {
    
    align-items: center;
    justify-content: center;
    height: 100vh;
  }
  
  .nadpis h1 {
    font-size: 1450%;
    color: #f5f5f5;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
    animation: zobrazeni 2s ease-in-out;
    font-family: DynaPuff;
    margin-top: 0;
    padding-top: 8%;
  }

  @keyframes zobrazeni {
    0% { opacity: 0; transform: translateY(-20px); }
    100% { opacity: 1; transform: translateY(0); }
  }
  
 .podnadpis {
  margin-top: 0; 
  font-size: 400%;
  color: #f5f5f5; 
  text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.7); 
 }

 .sipka{
  display: block;
  animation: pohyb 1.5s infinite;
  margin-top: -15%;
  
 }

@keyframes pohyb {
  0%, 100% {transform: scale(1);}
  50% { transform: scale(1.2); }
}

  .kartyHorni {     
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .karticka {
    width: 20%;
    height: 150px;
    margin: 3%;
  }
  
  .karticka-vnitrni {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 1s;
    transform-style: preserve-3d;
  }
  
  .karticka:hover .karticka-vnitrni {
    transform: rotateY(180deg);
  }
  
  .kartaPredni, .kartaZadni {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    color: white;
    font-size: 1.2rem;
  }

  .kartaPredni {
    background-color: black;
    font-family: DynaPuff;
  }
  
  .kartaZadni {
    background-color: black;
    transform: rotateY(180deg);
    font-family: DynaPuff;
  }

 .obrazky{
    width: 80%;
    border-radius: 15px;
    transition: 0.7s;
    margin-right: 4%;
    margin-left: 4%;
    
 }

 .obrazky:hover {
    transform: scale(1.3);
 }

 .celeObal {
    display: flex;
 }

 .obal {
    position: relative;
 }

 .popis {
    position: absolute;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    font-size: 20px; 
    border-radius: 8px; 
    top: 105%;
    left: 38%;
}

.odkaz a{
  color: white;
  z-index: 10;
  margin-left: 80%;
  border-radius: 15px;
  background-color: black;
  padding: 1%;
  text-decoration: none;
  transition: 2s;
  font-size: 225%;
}

.odkaz a:hover { 
  color: rgb(85, 13, 13);
  transition: 2s;
  
}

.footer {
    padding-top: 5%;
    color: white;
}

@media screen and (max-width:768px) {
  
.odkaz a {
  margin-left: -30%;
  font-size: 85%;
}

.nadpis {
  height: auto;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}


  .nadpis h1 {
    font-size: 300%;
    text-align: center;
    padding-top: 0;
    margin-left: 12%;
  }

  .podnadpis {
    font-size: 120%; 
    margin-left: -50%;
    margin-top: 20%;
  }

  .sipka {
    visibility: hidden;
    margin-top: 0;
    display: none;
  }

  .kartyHorni {
    flex-direction: column; 
    align-items: center;
    
  }

  .karticka {
    width: 90%; 
    margin: 10px 0; 
  }

  .celeObal {
    flex-direction: column; 
    align-items: center;
  }

  .obal {
      width: 80%; 
      margin-bottom: 10px;
  }  

  .obrazky:hover {
    transform: none
 }

  .popis {
    visibility: hidden;
  }

  .odkaz {
      margin-left: 25%; 
  }
}

@media screen and (min-width:769px) and (max-width: 1024px) {

  .odkaz a {
    margin-left: 0;
    font-size: 150%;
  }

  .nadpis {
    margin-bottom: 38%; 
    padding: 0;
    height: fit-content;
}

  .nadpis h1 {
    font-size: 600%; 
    margin: 0; 
}

.podnadpis {
  font-size: 300%; 
  padding-top: 20%;
}

.sipka {
  display: none
}

.kartyHorni {     
  display: flex;
  flex-wrap: wrap; 
  width: 130%;
  margin-left: -15%;
}

.karticka {
    width: 30%; 
    margin: 2%; 
}

.popis {
  display: none;
}

.obrazky {
  margin-top: 40%;
}

}