style.css

body {
    text-align: center;
    font-family:'Times New Roman', Times, serif;
    background-color: white;
}

.container{
    width: 70%;
    height: 100%;
    margin: 0px auto;
    border-radius: 5px;
    border: 5px solid rgb(199, 121, 134);
    padding-left: 5px;
    padding-right: 5px;
    background-color:rgb(red, green, blue);
    margin-top: 10px;
    margin-bottom: 10px;
}

header {
    color: gold;
    text-align: center;
    background-color: rgb(199, 121, 134);
    width: 100%;
    height: 100%;
    line-height: 300%;
    margin-top: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
   border: 3px solid gold;

}

nav {
    font-size: 15px;
    text-align: center;
    background-color: gold;
    color: rgb(199, 121, 134);
    border-radius: 5px;
    margin-top: 10px;
    margin-bottom: 10px;
    line-height: 250%;
    width: 100%;
    height: 100%;
    border: 3px solid rgb(199, 121, 134);
}

#contenido {
    width: 70%;
    height: 100%;
    background-color: rgb(199, 121, 134);
    margin-top: 10px;
    margin-bottom: 10px;
    float: left;
    line-height: 200px;
    border: 3px solid gold;
}

#contenido h1{
    font-size: 200%;
    text-align: center;
    color:white;
    height: 300px;
    line-height: 50px;
    
}

aside {
    width: 29%;
    height: 100%;
    background-color: gold;
    margin-top: 10px;
    margin-bottom: 10px;
    float: right;
   border: 1px solid rgb(199, 121, 134);
}

aside h1 {
    font-size: 200%;
    text-align: center;
    height: 292px;
    color: white;
    line-height: 300px;
}

.clearfix {
    clear: both;
}

footer {
    background-color: rgb(199, 121, 134);
    color: gold;
    width: 100%;
    height: 70%;
    line-height: 70px;
    border-top: 1px solid black;
    margin-top: 10px;
    border: 3px solid gold;
}