body        {
    background-color:yellow;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    font-size: 15px;
    
}
h1,h2,h3   {
    background-color: grey;
    
}
.codigo {
    background-color: brown;
    color: azure;
    
    
    
}
p{
    
    font-family:Georgia, 'Times New Roman', Times, serif
}