h1{
    margin-bottom: 20px
}
h2{
    white-space: normal;
    color:#d80037
}
#new_user,#user{
    padding:10%;
    width:100%;    
    
}
#new_user{
   margin-bottom:30px; 
}
#user{
   /*border-top:1px solid gray; */
}
div.row{
    padding:10px 0;
}
form#entrar,form#olvidarse{    
}
form#entrar{
    margin-bottom:30px;
   /* padding-top:30px;*/
    /*border-top:1px solid gray;*/
}
.col-25{
    display:none
}
form#olvidarse{
    margin-top:30px;
   /* padding-top:30px;*/
    /*border-top:1px solid gray;*/
}
.container_principal section{
    display: flex;
    flex-wrap  :wrap;
    justify-content: center;
}

hr{border:1px solid red}

.validacion{
    display:none;
    color:red
}

.advertencia a{
    color:red;
    text-align: justify;
    font-size: 12px
}

@media screen and (min-width:550px){ 
    .columna-no-movil{display:block}
    .col-25{
    display: inline-block
   }
    }
@media screen and (min-width:900px){ 
    hr:first-child{display:block}
   #new_user,#user{
       width:40%;       
       
   } 
   #new_user,#user{
        padding:2%
    }
}