*{
    margin: 0;
    padding: 0;
}

body{
    background: linear-gradient(to right, blue, pink);
    height: 100%; /* Para asegurarse de que el body ocupe todo el alto de la pantalla */
    display: flex;
    flex-direction: column;
    justify-content: center; /* Centra la section verticalmente */
    align-items: center; /* Centra la section horizontalmente */
}

header {
    position: relative;
    margin: 2%;
    text-align: center;
    color: white;
    cursor: ;
}

header ul {
    display: flex;
    margin: auto;
    text-align: center;
}

header ul li{
    list-style: none;
    margin: 20px;
}

ul > input{
    display: none;
}

section{
    padding: 20px;
    margin: auto;
    border: 2px solid white;
    border-radius: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    color: white;
    width: 80%;
    height: auto;
    max-width: 600px;
    text-align: center;
    aspect-ratio: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-grow: 1;
    box-shadow: 0 0 10px black ;
}

section .window{
    width: 80%;
}

#w1, #w2, #w3{
    display: none;
}

.checkbox1:checked ~ #w1{
    display: block;
}

.checkbox2:checked ~ #w2{
    display: block;
}

.checkbox3:checked ~ #w3{
    display: block;
}

.window h1{
    margin-bottom: 50px;
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: white;
    padding: 20px 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

footer a {
    display: flex;
    align-items: center;
    margin: 0;
    font-size: 16px;
    color: white;
}

footer img {
    width: 20px;
    margin-right: 8px;
}