* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: black;
    background-image: url('images/9.png');
}

#container {
    display: flex;
    flex-direction: column;
    width:85%;
    font-family:Helvetica, Ariel, sans-serif;
    margin: 20px auto;
    background-color:black;
    border:3px solid yellow;
    border-radius:15px;
}

header {	
    display: flex;
    justify-content: center;
    align-items: center;
    background-color:black;
    background-image: url('images/9.png');
    padding:.8em;
    border-top-left-radius:15px;
    border-top-right-radius:15px;
}

nav  {
    color:black;
    background-color: yellow;
    padding: 15px 10px;
    font-size: .9em;
}

nav ul{
    padding-inline-start: 12px;
    display: flex;
    justify-content: space-between;
}

nav ul li {
    list-style-type:none;	
    margin-right:1.8em;	
}

.row {
    display: flex;
}

main {
    background-color:black;
    padding: 10px;
    border-right:2px solid yellow;
	order: 2;
	flex: 5;
}

#side1 {
    background-color: black;
    padding: 10px;
    border-right:2px solid yellow;
	order: 1;
	flex: 3;
}

#side2 {
    background-color: black;
    padding: 10px;
	order: 3;
	flex: 3;
}

footer  {
    color: black;
    background-color:yellow;
    padding:1.2em;
    border-bottom-left-radius:13px;
    border-bottom-right-radius:13px
}