*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
section{
    width: 90%;
    max-width: 1680px;
    height: auto;
    display: flex;
    font-family: sans-serif;
}
.contenido{
    width: 100%;
    height: auto;    
    margin: auto;    
    flex: 1 1%;
    box-sizing: border-box; 
    background: url(imagenes/img-mart1.png);
    background-attachment:fixed;
    display: flex;
    flex-wrap: wrap;
    margin-top: 8px;
    margin-bottom: 8px;
    padding: 20px 20px;
}
#picture{
    width: 100%;
    height: auto;
    margin: auto;
}
.img div{
    width: 90%;
    height: auto;
    margin: auto;
    font-family: sans-serif;
    font-size: 2rem;
    color: #fff;
    text-align: center;
}
.img{
    width: 90%;
    height: auto;
    margin: auto;
    display: flex;
    flex-wrap: wrap;
}
.img img{
    padding: 2px;
    margin-bottom: 6px
}
.img img:hover{
    transform: scale(1.4);
    transition: 0.5s;
}
@media (min-width:420px) and (max-width: 960px){

@media (min-width:0) and (max-width: 420px){