.header {
  margin-left: 300px; /*whatever value add 150px */
  margin-right: 150px;
  margin-top: 20px;
  margin-bottom: 20px;
  padding: 20px;
  background: #5CA9FC;
  text-align: center;
  color: white;
  font-size: 30px;
  }

/*sidebar menu*/
.sidenav {
  height: 100%; /* Full-height: remove this if you want "auto" height */
  width: 150px; /* Set the width of the sidebar */
  position: fixed; /* Fixed Sidebar (stay in place on scroll) */
  z-index: 1; /* Stay on top */
  top: 0; /* Stay at the top */
  left: 0;
  background-color: #5CA9FC;
  overflow-x: hidden; /* Disable horizontal scroll */
  padding-top: 20px;
}

/* navigation menu links */
.sidenav a {
  padding: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 20px;
  font-family: Monaco, Lucida, Monospace;
  color: #e7e7e7;
  display: block;
}

/* When you mouse over the navigation links, change their color */
.sidenav a:hover {
  color: #212C51;
  font-weight: bold;
  
}

/* Style page content */
.main {
  margin-left: 150px; /* Same as the width of the sidebar */
  padding: 0px 10px;
  background: #3468d6;
  font-family: Lucida, Monospace;
}

/* On smaller screens, where height is less than 450px, change the style of the sidebar (less padding and a smaller font size) */
@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}

.body {
  background-image: url("bluegrain.png");
  }