Establecemos la estrutura

Creamos la Plantilla para la estructura

 

Aplicamos los estilos

@charset "utf-8";
#contenedor {
height: auto;
width: 970px;
margin-right: auto;
margin-left: auto;
padding-top: 5px;
border: thin solid #666;
border-radius: 10px;
box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.5);
background-color: #FFF;
padding-bottom: 5px;
margin-top: 5px;

}

aside {
float: left;
width: 190px;
border: thin solid #A3A3A3;
font-size: 0.7em;
font-family: Arial, Helvetica, sans-serif;
padding-top: 5px;
margin-top: 40px;
list-style-position: inside;
list-style-type: decimal;
padding-bottom: 20px;
}

aside a {text-decoration: none;}


#contenedor #contenedor2 aside .actividades {
width: 100%;
padding-left: 10px;
padding-bottom: 20px;
padding-top: 10px;
padding-right: 5px;
}

#contenedor #contenedor2 aside h2 {
border-top-width: thin;
border-right-width: thin;
border-bottom-width: thin;
border-left-width: thin;
border-bottom-style: solid;
border-top-color: #E8E8E8;
border-right-color: #E8E8E8;
border-bottom-color: #E8E8E8;
border-left-color: #E8E8E8;
line-height: 20px;
vertical-align: middle;
text-align: center;
height: 20px;
background: #e2e2e2; /* Old browsers */

background: -moz-linear-gradient(top, #e2e2e2 0%, 
#dbdbdb 50%, #d1d1d1 51%, #fefefe 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, 
color-stop(0%,#e2e2e2), color-stop(50%,#dbdbdb), 
color-stop(51%,#d1d1d1), color-stop(100%,#fefefe)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #e2e2e2 0%,#dbdbdb 50%,
#d1d1d1 51%,#fefefe 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #e2e2e2 0%,#dbdbdb 50%,
#d1d1d1 51%,#fefefe 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #e2e2e2 0%,#dbdbdb 50%
,#d1d1d1 51%,#fefefe 100%); /* IE10+ */
background: linear-gradient(to bottom, #e2e2e2 0%,#dbdbdb 50%,#d1d1d1 51%,
#fefefe 100%); /* W3C */

}


#contenedor2 {
width: 98%;
margin-right: auto;
margin-left: auto;
}


.articulo1 ul {
list-style-type: square;
margin-left: 20px;
}


body {
background-image: url(imagenes/fondoIte.png);
background-color: #FFF;
}
#navhorizontal {
border-top-width: thin;
border-right-width: thin;
border-bottom-width: thin;
border-left-width: thin;
border-top-style: solid;
border-right-style: none;
border-bottom-style: solid;
border-left-style: none;
border-top-color: #666;
border-right-color: #666;
border-bottom-color: #666;
border-left-color: #666;
text-align: left;
vertical-align: middle;
/*line-height: 38px;*/
background-color: #F0F0F0;
font-family: Arial, Helvetica, sans-serif;
font-size: .75em;



}

html {
background-color: #FFF;
}

/*Menu horizontal*/
nav ul ul {
display: none;
}

nav ul li:hover > ul {
display: block;
}


nav ul {
background: #efefef;
background: linear-gradient(#efefef 0%, #bbbbbb 100%);
background: -moz-linear-gradient(#efefef 0%, #bbbbbb 100%);
background: -webkit-linear-gradient(top, #efefef 0%,#bbbbbb 100%);
box-shadow: 0px 0px 9px rgba(0,0,0,0.15);
padding: 0 10px;
border-radius: 10px;
list-style: none;
position: relative;
display: inline-table;
}
nav ul:after {
content: ""; clear: both; display: block;
}

nav ul li {
float: left;
}
nav ul li:hover {
background: #4b545f;
background: linear-gradient(#4f5964 0%, #5f6975 40%);
background: -moz-linear-gradient(#4f5964 0%, #5f6975 40%);
background: -webkit-linear-gradient(#4f5964 0%,#5f6975 40%);
border-radius:7px;
}
nav ul li:hover a {
color: #fff;
border-radius:10px;
}

nav ul li a {
display: block;
padding: 10px 10px;
color: #757575; text-decoration: none;
}


nav ul ul {
background: #5f6975; border-radius: 10px; padding: 0;
position: absolute; top: 100%;
}
nav ul ul li {
float: none;
border-top: 1px solid #6b727c;
border-bottom: 1px solid #575f6a; position: relative;
}
nav ul ul li a {
padding: 10px 10px;
color: #fff;
}
nav ul ul li a:hover {
background: #4b545f;border-radius:7px;
}

nav ul ul ul {
position: absolute; left: 100%; top:0;
}

 

​Actividad:

1. Analiza los estilos aplicados para obtener la estructura de la página web inicial.
2. Crea la página web correspondiente y la hoja de estilo con el código suministrado.
3. Comprueba el resultado en el navegador.
4. Añade los estilos que faltan para obtener la estructura propuesta: section,  articluo1, footer.