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

body{
    background-color: hsl(204, 43%, 93%);
    font-family: 'Karla', sans-serif;
    font-size: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding: 20px;
}

.card{
    max-width: 700px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card-content{
    grid-column: span 2;
    background-color: white;
    padding: 40px;
    text-align: left;
}

.card-content .title{
    color: hsl(179, 62%, 43%);
    margin-bottom: 20px;
}

.card-content .explanation{
    color: hsl(71, 73%, 54%);
    margin-bottom: 10px;
    font-weight: bold;
}

.card-content .text{
    color: hsl(218, 22%, 67%);
    line-height: 1.6;
}

.product{
    background-color: hsl(179, 62%, 43%);
    color: white;
    padding: 40px;
}

.product .price{
    font-size: 28px;
    margin: 10px 0;
}



.product .price strong{
    font-size: 32px;
}

.sign{
    width: 100%;
    margin-top: 20px;
    background-color: hsl(71, 73%, 54%);
    color: white;
    padding: 15px;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3 ease;
}

.sign:hover{
    background-color: hsl(71, 73%, 60%);
}

.comment {
    background-color: hsl(179, 62%, 47%);
    color: white;
    padding: 40px;
    font-size: 14px;
    line-height: 1.6;

}

@media (max-width: 768px) {
  .card {
    grid-template-columns: 1fr;
  }

  .card-content {
    grid-column: auto;
    text-align: center;
    padding: 20px;
  }

  .product,
  .comment {
    text-align: center;
    padding: 20px;
  }

  .sign {
    margin-top: 15px;
  }
}