.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 12px;
  background-color: #fff;
}

.site-header img {
  height: 60px;
  width: auto;
  margin: 0;
  padding: 12px;
  float: none;
}

.site-description {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.6px;
  color: #161617;
  font-family: "Verdana";
  font-weight: bold;
  text-align: right;
}

@media (max-width: 400px) {
  .site-header {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
  }
  .site-description {
    text-align: center;
  }
}

body {
	background-color: #e4eaf2;
	font-family: sans-serif;
	font-weight: normal;
	font-size: 18px;
	margin: 0;
	}

h1 {
	font-size: 45px;
	letter-spacing: 0.6px;
	color: #161617;
	font-family: "Verdana";
	font-weight: bold;
	text-align: center;
  margin-top: 100px;
	}

h2 {
	font-size: 36px;
	letter-spacing: 0.6px;
	color: #161617;
	font-family: "Verdana";
	font-weight: bold;
	text-align: left;
	}

h3 {
	font-size: 24px;
	letter-spacing: 0.6px;
	color: #161617;
	font-family: "Verdana";
	font-weight: bold;
	}

.content {
    margin: 5% 10% 10% 10%;
    font-family: sans-serif;
    font-weight: lighter;
    font-size: 18px;
    line-height: 1.5;
 	}

.content img {
  float: none;
  display: block;
}

  ul.sidenav {
    list-style-type: none;
    display: inline-block;
    float: left;
    margin: 0;
    padding: 0;
    width: 15%;
    background-color: #1e528e;
    position: fixed;
    height: 100%;
    overflow: auto;
  }

  ul.sidenav li a {
    display: inline-block;
    color: white;
    font-family: "Verdana";
    padding: 8px 16px;
    text-decoration: none;
  }
   
  ul.sidenav li a.active {
    background-color: #002045;
    color: #002045;
    text-decoration: underline;
  }

  ul.sidenav li a:hover:not(.active) {
    background-color: #90c3ff;
    color: #002045;
  }

  div.content {
    margin-left: 25%;
    padding: 1px 16px;
    height: 1000px;
  }

  @media screen and (max-width: 9000px) {
    ul.sidenav {
      width: 100%;
      height: auto;
      position: relative;
      display: flex;
      justify-content: flex-end;
    }
    
    ul.sidenav li a {
      float: left;
      padding: 15px;
    }

    img {
      display: block;
      margin: auto;
      float: left;
      padding: 15px;
    }
  }

  @media screen and (max-width: 400px) {
    ul.sidenav {
      flex-direction: column; /* stack items vertically */
    }
    ul.sidenav li a {
      text-align: center;
      float: none;
    }
      }