styles.css

/*Page-wide styling----------------------------------------------*/
* {
  box-sizing: border-box;
}
body {
  font-family: "Verdana";
  background-color: #464646;
  padding: 0px;
  margin: 0px;
}

/*Styling for title block--------------------------------------*/
header {
  background-color: #0d4f77;
  padding: 10px;
  font-size: 25px;
}
h1 {
  padding: 0px;
  margin-top: 10px;
  margin-bottom: 0px;
}
#title1 {
  color: #ee8021;
  margin-left: 5px;
}
#title2 {
  color: white;
}
#subtitle {
  color: white;
  font-size: 18px;
  margin-left: 5px;
}

/*Styling for main navigation menu--------------------------------*/
aside {
  background-color: #0b3650;
  color: white;
  font-size: 15px;
  float: left;
  width: 20%;
  height: 700px;
  font-size: 15px;
}
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  width: 100%;
}
li a {
  display: block;
  padding: 15px;
  color:white;
  text-decoration: none;
}
li a:hover {
  background-color: #2c9acb;
  margin-left: 0px;
}
.current_page {
  background-color: #2c9acb;
}

/*Styling for body of content----------------------------------------*/
section {
  background-color: LightBlue;
  color: black;
  padding: 15px;
  overflow: auto;
  float: left;
  width: 80%;
  font-size: 16px;
}
#home_div {
  margin-top: 20px;
  margin-bottom: 20px;
}
/*Flex container-------------------------------------------------------*/
.flex-container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: baseline;
}
.flex-container > div {
  color: LightBlue;
  font-size: 15px;
  text-align: center;
  line-height: auto;
  width: 174px;
  height: 142px;
  margin: 10px;
  padding: 0px;
  border: 2px solid LightBlue;
}
.flex-container > div:hover {
  color: black;
  border: 2px solid #2c9acb;
}
.thumbnail {
  width: 170px;
}

/*Styling for external links in footer---------------------------------*/
footer {
  background-color: #464646;
  color: white;
  padding: 10px;
  text-align: center;
  overflow: auto;
  font-size: 20px;
}
nav {
  background-color: #464646;
}
.bottom_nav_elements {
  background-color: #464646;
  color: white;
  padding-top: 8px;
  padding-bottom: 8px;
}
.icon {
  height: 21px;
}

/*Media query to change element layout--------------------------------*/
@media (max-width: 2000px) {
  aside, section {
    height: 800px;
  }
}
@media (max-width: 815px) {
  aside, section {
    height: 1000px;
  }
}
.longpage {
  height: 1300px;
}
@media (max-width: 600px) {
  aside, section, .longpage {
    width: 100%;
    height: auto;
  }
}