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

html{background-image: url(../img/fondo.png); background-size: cover;background-attachment: fixed;}


nav{ width: 1100px; height: 100px; background:aqua}
/*      header{ width: 1000px; height: 200px; background: #e74c3c}
     main { width: 1000px; height: 500px; background: blueviolet}*/
footer{ width: 1100px; height: 50px;  background: linear-gradient(black 10%, red 60%,orange 80%);
        text-align: center; float: left; clear: both;
}

section#box{width: 198px; height: 100px; float: left;
            background: darkorange;
            border: 1px solid black;}

section#banner{width: 800px; height: 300px; float: left;  background: linear-gradient(brown 20%, aqua 60%,black 97%);border: 5px solid black;}

section#login{width: 300px; height: 150px;float: left; background:black;}
section#form{width: 300px; height: 150px;float: left; background:black;}

aside#left{width: 200px;height: 1300px;float:left;background: linear-gradient(to right, white, brown); border-left: 3px solid black;}
article{width: 750px;height: 1300px;float:left;  background: linear-gradient(to right, white, green);}
aside#right{width: 150px;height: 1300px;float:left; background: linear-gradient(to right, white, #439aea); border-right:3px solid black; }


nav ul{width: 1100px; height: 100px; }
nav ul li{ list-style: none; }
nav ul li a{ float: left; width: 220px; text-align: center;line-height:100px;
             text-decoration: none;font-size: 24px;font-weight: bold; border-right: 15px solid black;
} /*line-height:(para q se ubica justo en la mitad,) la misma distancia del altodel menu
             - seria la lista, el width es 200(e elem en el menu) xq el menu nav tiene 1000*/
nav ul li a:hover{ color:white;  background: linear-gradient(brown 20%, aqua 60%,black 97%);text-shadow: 3px 1px 0px black;}
 
/*  background: linear-gradient(to right, red, green);*/
/*    background: linear-gradient(to right top, blue, orange); */
/*   background: linear-gradient(360deg, orange, red,black);*/


.fondo{
    background: linear-gradient(orange 20%, red 60%,black 90%);
}

.lado img{float: left;  border: 6px solid black;
          ;}

.ima{width: 236px; height: 145px; cursor: pointer;}

 
 

article .art-jsp{
    width: 80%;
}