title {
  font-size: 24px;
}
.title_menu {
  display: flow-root;
}
.title_bar {
    font-size: 20px;
    font-weight: bold;
    float: left;
}
.menu_bar {
    float: right;
}
body {
  background-color: green;
  color: white;
  font-family: sans-serif;
  margin: 50px;
  padding: 0;
}
img {
  width: 70%;
  margin: auto;
  display: block;
}
footer {
  text-align: center;
}