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I don't know what I've done to change the width of the text input field...

I haven't a clue as to what I did to cause the <div> containing the submit button to jump below the <li> and also cause the text field width to change so drastically.

Anyone have any suggestions?

<!DOCTYPE html>
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    <title>Practice CSS Selectors</title>
    <link href="https://fonts.googleapis.com/css?family=Bree+Serif|Raleway" rel="stylesheet">
    <link href="http://treehouse-code-samples.s3.amazonaws.com/practice-css/styles-selectors.css" rel="stylesheet">
    <link href="selectors.css" rel="stylesheet">
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/* ====================================================== 
   Practice CSS Selectors 
========================================================= */

/* Change the color of all list items inside an unordered list */

ul li {
  color: lightcoral;

/* Remove the text decoration from navigation links, and change their color when hovered */

nav a:link {
  text-decoration: none;

nav a:hover {
  color: skyblue;

/* Create visited and hover styles for all links inside 'main' */

main a:visited  {

main a:hover {
  color: red;

 Change the background color of the submit button when active.
 Check teacher's notes for resources on this part of the challenge. */

input[type='submit']:active {

/* Give the text field a blue border upon focus.
   Check teacher's notes for resources on this part of the challenge. */

input[type='text']:focus  {
  border: 1px solid steelblue;

/* Give the 'span' tag in the footer a meaningful class name and reduce its font size */

.copyright  {
  font-size: 12px;

/* Give the 'img' tag in the header an ID and set its width to 190px */

#site-logo  {
  width: 190px;

/* Target all heading tags on the page and set their font family to 'Bree Serif', serif */

h1, h2, h3  {
  font-family: 'Bree-Serif', serif;