*{
    box-sizing: border-box;
}

body{
    background-image: url(../img/fondo_einstein.jpg);

    display:flex;
    flex-wrap: wrap;

}

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

h1{
    width: 100%;
    height: 70px;
    background-image: url(../img/titulo.jpg);
    text-align: center;
    font-size: 4em;
    color: white;
    margin-top: 10px;
}

p{
 
    background-color: white;
   
    font-size: 20px;
}