main.css

input {
  border: 1px solid lightblue; }

nav ul li {
  display: inline; }

nav ul a {
  color: black;
  width: auto;
  padding: 10px; }

nav ul a:hover {
  background: darkgray; }

nav ul {
  padding: 20px; }

nav {
  border: 1px solid green; }

.lang {
  position: absolute;
  top: 2px;
  right: 15px; }

.lang img {
  max-width: 50px; }

.clearfix:before,
.clearfix:after {
  content: " ";
  display: block; }

.clearfix {
  *zoom: 1; }

.clearfix:after {
  clear: both; }

.centeralign {
  text-align: center; }