*{
    box-sizing: border-box;
    margin: 10px auto;
}

body{
    background-image:url(../img/fondo_einstein.jpg);
    display: flex;
    flex-wrap: wrap;
}

h1{
    width: 100%;
    background-image:url(../img/titulo.jpg);
    color: white;
    text-align: center;

}

p{
    background-color: white;
    font-size: 10px;

}

img{
    border: 10px solid grey;
}