* {
  box-sizing: border-box;
}

/* Style the header */
header {
  font-family: Georgia, serif;
  background-color: #eee;
  padding: 30px;
  text-align: center;
  font-size: 35px;
  color: #220;
}


/* Clear floats after the columns */
section::after {
  content: "";
  display: table;
  clear: both;
}

/* Style the footer */
footer {
  padding: 10px;
  text-align: center;
}

/* Responsive layout - makes the two columns/boxes stack on top of each other instead of next to each other, on small screens */
@media (max-width: 600px) {
  nav, article {
    width: 100%;
    height: auto;
  }
}

body {
  background-color: #eee;
  font-family: Verdana, sans-serif;
  font-size: 12px;  
}

h3 {
  font-family: Georgia, serif;
  font-size: 24px;    
  text-align: center;
}

button {
  padding: 12px;
  padding-right: 65px;
  padding-left: 65px;
}


.container {
  background-color: #ddd;
  margin-left:  auto;
  margin-right:  auto;
  margin-top: 17px;
  max-width: 1170px;
  padding-top: 20px;
  padding-right: 15px;
  padding-left: 15px;
}

.container_top {
  background-color: #fff;
  margin-left:  auto;
  margin-right:  auto;
  margin-top: 17px;
  max-width: 1170px;
  padding-right: 15px;
  padding-left: 15px;
}

.demo_image {
    float: right;
    padding: 10px;
}

.text_box {
    padding: 10px;
}