:root{
    --color1: #05aff2;
    --color2: #f2f2f2;
}
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
#contenedor{
    width: 80%;
    margin: 25px auto;
    border: 1px solid grey;
    padding: 5px;
}
header{
    height: 100px;
    background-color: var(--color1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 5px;
}
header img{
    max-height: 100%;
}
header h3{
    color: var(--color2);
    padding-right: 10px;
    text-transform: uppercase;
}
nav{
    margin: 10px;
    height: 90px;
}
nav ul{
    display: flex;
    justify-content: end;
    list-style: none;
}
nav ul li{
    min-width: 120px;
}
nav ul li a{
    text-decoration: none;
    background: black;
    color: white;
    padding: 5px 20px;
    display: block;
}
nav ul li a:hover{
    background-color: #434343;
}
nav ul li ul{
    display: flex;
    flex-direction: column;
    display: none;
}
nav ul li:hover>ul{
    display: block;
}
main{
    margin: 5px;
    margin: 5px;
    text-align: justify;
    display: flex;
    justify-content: space-around;
}
section{
    width: 60%;
    padding: 5px;
}
aside{
    width: 30%;
    padding: 5px;
    font-size: 1em;
}
aside img{
    max-width: 90%;
    display: block;
    margin: 10px auto;
}
article{
    margin: 10px 5px;
}
article img{
    max-width: 100%;
    display: block;
    margin: 10px auto;
    border-radius: 10px;
}
h4,h5{
    text-align: center;
    margin: 10px 0;
    padding: 5px;
    background-color: black;
    color: white;
    text-transform: uppercase;
}
p{
    padding: 10px 0;
}
article li{
    padding: 5px 10px;
}
footer{
    background-color: var(--color1);
    margin: 5px;
    text-align: center;
    color: white;
    padding: 5px 0;
}
footer a{
    color: white;
    text-decoration: none;
}
footer p{
    padding: 2px 0px;
}
footer i{
    font-size: 1.5em;
}

/*estilo para youtube*/
#content{
    width: 70%;
    margin: 20px auto;
    border: 1px solid grey;
}
#titulo{
    background-color: #434343;
    color: white;
    text-align: center;
    font-size: 1.5em;
    padding: 10px 0;
    margin: 10px
}
#video-responsivo{
    padding: 10px;
    margin: 10px;
    border: 1px solid grey;
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}
#video-responsivo iframe, #video-responsivo video{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}