* {
box-sizing: border-box; margin: 0; padding: 0;    
}

.contenedor {
width: 900px;  
margin: auto;    
}

.main {
display: flex;
padding: 0;    
}

p {
font-size: 28;
color: #fff;
font-family:arial;
text-align: center;    
}

header {
background: #b5058d;
width: 100%;
padding:2.8rem 0 2.8rem 0;
margin: 0.5rem 0 0 0;   
}

section {
background: #03f5ec; 
width: 70%;    
padding: 1rem 0.3rem 1rem 0.3rem;
margin: 0.3rem 0.3rem 0 0;       
}

section article {
background: #078454;
width: 32%; 
margin: 0.2rem;
padding: 5rem 0 5rem 0;    
}

.art1 {
display: flex;
flex-direction:row;
flex-wrap: wrap;
justify-content: space-around;
align-items: flex-start;
align-content: stretch; 
   
}

.art2 {
display: flex;
flex-direction:row;
flex-wrap: wrap;
justify-content: space-around;
align-items: flex-end;
align-content: stretch;    
}

footer {
background: #cae30a; 
width: 100%;
padding:2.8rem 0 2.8rem 0;
margin: 0.3rem 0 0 0;    
}

aside {
background:#6807c9;
width: 35%; 
margin: 0.3rem 0 0 0 ;
}