html
{
    font-size: 62.5%;
}
*
{
    box-sizing: border-box;
}
body
{
    background-color: #f2f1f4;
    color: #6a6d70;
    line-height: 1.8;
    margin: 35px;
    font-family: 'Open Sans', sans-serif;
    font-size: 1.6rem;   
}
a
{
    color: #49b2b4;
    text-decoration: none;
}
header,footer
{
    text-align: center;  
}
h2, header nav
{
    font-size:2.4rem;
    border: none;
    border-bottom: 1px solid #30a894;
}
/******************** TITRE *************/
h1,h2
{
    color:#30a894 ;
    font-family: 'PT Sans Narrow', sans-serif;
    font-weight: normal;
    text-transform: uppercase;
}
h1
{
    font-size: 4rem;
}
/******************** HEADER *************/
header nav
{
    background-color: #30a894;
    display: flex;
    flex-direction: column;
}
header nav a:hover
{
    background-color:#38b5a0 ;
}
header nav a
{
    color: #fff; 
    padding:25px 0px 25px 0px; 
    font-family: 'PT Sans Narrow', sans-serif;
}
/************** ASIDE ***************/
aside
{
    background-color:#b8dcb1;
    padding: 15px;
}
aside
{
    display: none;
}
/******************* FOOTER *********/
footer
{
    font-size: 1.3rem;
}
footer img
{
    width:50px;
    margin-top: 20px;
}
/******************* MEDIA QUERY *********/
@media screen and (min-width:768px)
{
 aside
 {
     display: block;
 }
}
@media screen and (min-width:1025px)
{
    body
    {

       max-width: 80%;
       margin-left: auto;
       margin-right: auto;
    }
    header nav
    {
        display: flex;
        flex-direction: row;
        justify-content: center;  
    }
    header nav a 
    {
        flex-basis: 33.33%
    }
    main
    {
        display:flex;
        flex-direction: row;
    }
    section{
        flex-basis: 70%;
    }
    aside
    {
        margin-left: 30px;
        flex-basis: 30%;
    }
}