body, *  {
    margin: 0px;
    padding: 0px;
    
}


#header1{
    margin: 0px;
    padding: 0px;
    background-color: #3e9fe4;    
    color: white;
    font-family: 'Lucida Handwriting';
    text-align: center;
}

#caja{
    display: flexbox;
}

nav{
    float: left;
    margin-right: 2%;
    padding: 0px;
    width: 13%;
    background-color: #8f8db7;
    height: 15em;
}

section{
    margin: 0px;
    padding: 0px;
    float: left;
    width: 65%;
    background-color: #98d659;
    height: 15em;
}

#header2{
    margin: 5%;
    padding: 0px;
    background-color: #f2fb20; 
}

article{
    margin: 5%;
    padding: 0px;
    background-color: #1aecdf;
}

#footer1{
    margin: 5%;
    padding: 0px;
    background-color: #f7dd4c;
}

aside{
    margin-left: 2%;
    padding: 0px;
    float: left;
    width: 18%;
    background-color: #8f8db7;
    height: 15em;
}

footer{
    text-align: center;
    font-size: small;
}

.clear{
    clear: both;
}