Cedrick

#sidebar{

float : right;

width: 30%;

background - color: #333;

color:#fff;

paddling: 15px;

box-sitting: border-box;

This image is resized using the 'width' and 'height' attributes of the 'img' tag.

} <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <style> body {margin: 0;}

ul.topnav {

 list-style-type: none;
 margin: 0;
 padding: 0;
 overflow: hidden;
 background-color: #333;

}

ul.topnav li {float: left;}

ul.topnav li a {

 display: block;
 color: white;
 text-align: center;
 padding: 14px 16px;
 text-decoration: none;

}

ul.topnav li a:hover:not(.active) {background-color: #111;}

ul.topnav li a.active {background-color: #4CAF50;}

ul.topnav li.right {float: right;}

@media screen and (max-width: 600px) {

 ul.topnav li.right, 
 ul.topnav li {float: none;}

} </style> </head> <body>

Responsive Topnav Example

This example use media queries to stack the topnav vertically when the screen size is 600px or less.

You will learn more about media queries and responsive web design later in our CSS Tutorial.

</body> </html>