body{  
    background-color: rgb(175, 239, 255);
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

#container{
display:flex;
flex-wrap:wrap;
justify-content: space-between;
padding:4rem;
gap:3rem;
}

.cartao{ 
    margin:1rem 1rem;
    height: 20rem;
    flex-grow: 1;
    flex-basis:calc(33% - 6rem);
}

.cartao_conteudo{ 
    text-align: center;
    background-color: rgb(197, 253, 255);
    height:100%;
    transform-style:preserve-3d;
    transition: transform 300ms ease-in-out;
}


.cartao_conteudo h3 {
    background-color: rgb(252, 255, 205);
    text-align: left;
    padding: 0.5rem;
    position: absolute;
    margin: 0.6rem;
    border-radius: 0.6rem;
    font-size: 1vw;
    backface-visibility:hidden;
}

.cartao_conteudo p {
    margin-top: 4rem;
    padding: 2rem;

}


footer {
    background-color: rgb(127, 204, 255);
    color: white;
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 2rem;
}

footer p {
    text-align: center;
    font-size: 0.6rem;
    margin-top: 0.5rem;
}
/* Rotacionar o cartão quando o mouse passar em cima */
  
 .cartao:hover .cartao_conteudo{  
    transform:rotateY(180deg);
 } 

 .resposta{ 
     transform:rotateY(180deg);
 }

 .pergunta, .resposta{ 
    backface-visibility: hidden;
    position: absolute;
    height: 100%;
    width: 100%;
 }