body{
    padding: 0;
    margin: 0;
    height: 100%;
    width: 100%;
    background-image: url(Imagenes/bajo-agua.jpg);
    background-size: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}
header{
    background-color: aqua;
    display: flex;
    align-items: center;
    width: 100%;
    position: absolute;
}

header button{
    border: none;
    height: 100%;
    width: 90px;
    background-color: aqua;
    color: black;
    cursor: pointer;
}

header button:hover{
    background-color: yellowgreen;
    color: white;
}

h1{
    margin: 80px;
    color: antiquewhite;
}

main{
    background-color: rgba(0, 255, 255, 0.466);
    margin: 0 auto;
    height: 100%;
    align-items: center;
    border: 1px solid black;
    display: flex;
    flex-direction: column;
}

main div{
    border: 1px solid black;
    width: 100%;
    height: 100%;
}

input{
    width: 100%;
}

main button{
    margin-left: 0 auto;
    width: 180px;
    height: 70px;
    font-size: 25px;
    border-radius: 2000px;
}

footer{
    background-color: aqua;
    color: black;
    bottom: 0;
    width: 100%;
    text-align: center;
    position: fixed;
}