*{
margin: 0px;
padding: 0px;
box-sizing: border-box;
}
body{
font-family: 'Times New Roman', Times, serif;
font-size: 18px;
line-height: 1.5em;
background-color: #425067;
}
.contenedorPrincipal{
max-width: 1200px;
margin: 0 auto;
}
header{
font-family: Arial, Helvetica, sans-serif;
background-color: #eeeeee;
overflow: hidden;
width: 100%;
}
header nav ul li{
list-style: none;
display: inline-block;
}
header nav ul li a{
text-decoration: none;
padding: 15px 20px 15px 20px;
display: inline-block;
color: #2d3646;
}
header nav ul li a:hover{
text-decoration: none;
padding: 15px 20px 15px 20px;
display: inline-block;
background-color: #000000;
color: white;
}
main{
    background-color: white;
width: 70%;
float: left;
}

main section{
padding: 30px;
}
main section p{
text-align: justify;
margin-bottom: 16px;
}
main h1{
margin-bottom: 30px;
}
main h2{
    margin-bottom: 25px;
    font-size: 28px;
}
.video {
    width: 100%;       
    max-width: 800px;  
    display: block;    
}
aside{
width: 30%;
float: left;
background-color:#25d6c8;
padding: 30px;
}
aside ul li{
text-decoration: none;
color: black;
}
aside ul li:hover{
color: #425067;
}
aside ul li{
list-style: none;
margin-bottom: 16px;
border-bottom: 1px solid black;
}
aside h4{
color: black;
margin-bottom: 20px;
font-size: 20px;
}
footer{
width: 70%;
clear: both;
padding: 60px;
background-color: #00000054;
}
footer p{
color: white;
text-align: center;
}
@media screen and (max-width: 800px) {
main{
width:100%;
display:block;
}
aside{
width: 100%;
display:block;
}
footer{
width: 100%;
display: block;
}
}