.portada{
width:100%; 
background: #9748B8; 
background: linear-gradient(13deg, rgba(151, 72, 184, 1) 6%, rgba(60, 24, 130, 1) 56%);   
border-bottom-left-radius: 50px;   
border-bottom-right-radius: 50px; 
}
.img_portada{
width:100%;
border-bottom-left-radius: 80px; 
border-bottom-right-radius: 80px; 
}

.img_portada_movil{
display:none
}

   
@media(max-width:795px){
  .img_portada{
    display:none; 
  }
  
  .img_portada_movil{         
  display:block;
    width:100%;
    border-bottom-left-radius: 34px; 
border-bottom-right-radius: 34px;
  }
}
  
}