CSS CSS Layout Basics Controlling Layout with CSS Display Modes CSS Display Modes Challenge

help me please

/* Complete the challenge by writing CSS below */

header {
  text-align: center;
.logo {
  width: 110px;
  margin: auto;
header {
  text-align: center;
.logo { display: block; 
  width: 110px;
  margin: auto;
.main-nav li, .main-nav {
      display: block;}
<!DOCTYPE html>
    <title>Getting Started with CSS Layout</title>
    <link href='https://fonts.googleapis.com/css?family=Varela+Round' rel='stylesheet' type='text/css'>
    <link rel="stylesheet" href="page.css">
    <link rel="stylesheet" href="style.css">
    <div class="container">
            <img class="logo" src="city-logo.svg" alt="logo">
            <ul class="main-nav">
                <li><a href="#">Ice cream</a></li>
                <li><a href="#">Donuts</a></li>
                <li><a href="#">Tea</a></li>
                <li><a href="#">Coffee</a></li>
Reggie Williams
Reggie Williams
Treehouse Teacher

Hey irini bakillari it looks like you've set the list items to block but the instructions ask to set them to a value that would allow them to be side by side, so try different values like inline and inline-block to see the difference