/* Apply box-sizing to all elements */
* {
  box-sizing: border-box;
}

/* Set the default font family and remove the default margin on body */
body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Style the header */
header {
  background: linear-gradient(to bottom right, #b60000, #ffffff);
  color: white;
  padding: 20px;
  text-align: center;
}

/* Increase the font size of the heading */
header h1 {
  font-size: 40px;
  margin: 0;
}

/* Style the navigation bar */
nav {
  background-color: #333;
  color: white;
  overflow: hidden;
  position: sticky;
  position: -webkit-sticky;
  top: 0;
}

/* Style the navigation bar links */
nav a {
  float: left;
  display: block;
  color: white;
  text-align: center;
  padding: 14px 20px;
  text-decoration: none;
}

/* Style the right-aligned link */
nav a.right {
  float: right;
}

/* Change color on hover */
nav a:hover {
  background-color: #ddd;
  color: black;
}

/* Style the active/current link */
nav a.active {
  background-color: #666;
  color: white;
}

/* Create a row that contains the columns */
.row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  margin: 0 -10px;
}

/* Style the left column */
aside {
  position: relative;
  width: 50%;
  background-color: #f1f1f1;
  padding: 20px;
  width: 30%;
  min-width: 250px;
  margin: 0 10px;
}

aside img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Style the footer */
footer {
  background: #ddd;
  color: #666;
  padding: 20px;
  text-align: center;
  margin-top: auto;
}

@media screen and (max-width: 700px) {
  /* Make the columns stack on top of each other */
  .row {
    flex-direction: column;
  }

  /* Center the aside element */
  aside {
    margin: 20px auto;
    width: 80%;
  }
}

/* Style the responsive layout for extra small screens */
@media screen and (max-width: 400px) {
  /* Make the navigation links stack on top of each other */
  nav a {
    float: none;
    width: 100%;
  }
}