*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    margin-top: 30px;
    background-color:#003851;
}


nav ul {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 5px;
    margin: 0;
    font-size: 20px;
    list-style-type: none;
    display: flex;
    justify-content: center;
    background-color: #002535;
    z-index: 1000;
    border-bottom: solid 2px;
    border-color: #22646e;
    font-family: "EB Garamond", serif;
}

nav li {
    margin: 0 1rem;
}

nav li a {
    color: rgb(255, 255, 255);
    text-decoration: none;
}

nav li a:hover {
   color:#458e99;
}

/* HEADER */
header{
    background-color:#1d8085;
    text-align: center;
}

#ocean{
    text-align: center;
    padding: 10px;
    color: #ffffff;
    font-family: "Sekuya", system-ui;
    font-weight: 400;
    font-style: normal;
    font-size: 60px;
    background-color: #002535;
    background-size: cover;
    background-position: center;
}

#frase{
    color: #ffffff;
    font-family: "Sekuya", system-ui;
    text-align: center;
    font-style: normal;
    background-color: #002535;
    background-size: cover;
    background-position: center;
    padding-bottom: 12px;
    font-size: 26px;
}



#intro{
    text-align: center;
    color: white;
    margin: 80px 0 50px;
    font-family: "Sekuya";
    font-size: 45px;
    text-shadow: 2px 2px 4px black;
   
  
}


.contenedor{
    display:grid;
    grid-template-columns: repeat(2,250px);
   justify-content: center;
    gap: 250px;
    padding: 30px 160px 60px 40px;
   
}


.card{
    width: 200px;
    height: 300px;
}


.card-inner{
    width: 390px;
    height: 490px;
    position: absolute; 
    top:0; 
    left:0; 
    position: relative;
    transition: transform 0.8s;
    transform-style: preserve-3d;

}


.card:hover .card-inner{
    transform: rotateY(180deg);
    perspective: 1000px;
}


.card-front, .card-back{
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-front{
    background-color: #1d8085;
    color: white;
    box-shadow: 5px 5px 10px black;
    font-size: 30px;
     font-family: "Sekuya";
    text-shadow: 2px 2px 4px black;
   

}


.card-back{
    width: 390px;
    background-size: cover;
    align-items: center;
    color: white;
    transform: rotateY(180deg);
    padding: 10px;
    position: absolute; 
    top:0; 
    left:0; 
    height: 490px;

}

.card-back img{

    border-radius: 10px;
    margin-bottom: 10px;


}