*{
    box-sizing: border-box;
    margin: 10px 3px;
}

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

}

img{
    margin: 20px 40%;
    border: 10px solid grey;
}

h1{
    width: 100%;
    color: white;
    background-image: url(../img/titulo.jpg);
    text-align: center;
    margin: 15px auto;
}

p{
    background-color: white;
    font-size: 1.4em;
    text-align: justify;
    padding: 5px;
}