/*

Student: Rhys Lewis
Version: 1.0

*/

body {
  height: 1280px;
  margin: 0;
  font-family: courier;
  background-color: #f5f5f5;
}

nav {
  display: inline-block;
  position: fixed;
  top: 0;
  height: 3%;
  width: 7.5%;
  min-width: 160px;
  left: 45%;
  font-size: 1em;
  font-family: courier;
  background-color: transparent;
  z-index: 1;
}

.dropbtn {
  font-family: courier;
  font-weight: bold;
  background-color: black;
  color: white;
  font-size: 20px;
  border: none;
  height: 100%;
  width: 100%;
  right: 0;
  border-bottom-left-radius: 50px;
  border-bottom-right-radius: 50px;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: black;
  width: 100%;
  top: 0;
  white-space: nowrap;
  z-index: 1;
  align-items: left;
  border-bottom-left-radius: 30px;
  border-bottom-right-radius: 30px;
  padding-bottom: 10px;
}

.dropdown-content a  {
  color: white;
  text-decoration: none;
  display: block;
  width: inherit;
  text-align: left;
  font-size: 20px;
  border: 0;
  padding: 3%;
}

.dropdown-content a:hover {color: #FE5722;}


header {
  background-color: black;
  height: 40%;
  background-size: cover;
  background-image: url("../images/topic_header.jpg");
  color: #FE5722;
  display: table;
  width: 70%;
  margin-left: 15%;
}

.spanContainer {
  text-align: left;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
}

span {
  display: inline;
  background-color: white;
  color: #FE5722;
  font-size: 4em;
  padding: 0;
  margin: 0;
}


main {
  display: flex;
  flex-direction: column;
  top: 50%;
  width: 70%;
  margin-left: 15%;

  padding: 0;
}

.topicTitle {
  font-size: 3em;
  background-color: black;
  background-image: none;
  text-align: center;
  width: 100%;
  margin-left: 0%;
  padding: 0;
}

.topic {

  display: flex;
  flex-direction: column;
  padding: 0;
  width: 100%;
  margin-left: 0;
  margin-bottom: 3%;
  background-color: white;
}

.sectionHeading {
  background-color: #FE5722;
  color: white;
  width: 99%;
  margin-left: 0;
  border: none;
  font-size: 2em;
  padding-left: 1%;
}

.defintionContent {
  width: 100%;
  margin-left: 0;
  margin-bottom:2.5%;
  font-size: 1.5em;
  padding: 1%;
}

.problemContent {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin-left: 0;
}

.column {
  display: flex;
  flex-direction: row;
}

.row {
  width: 50%;
  padding: 1%;
  text-align: justify;
  font-size: 1.5em;
}

.padder {
  margin: 0;
  padding: 1%;
  width: 98%;
  text-align: justify;
  font-size: 1.5em;
}

h2 {
  padding: 0;
  margin: 0;
  font-size: 1em;
}

h3 {
  padding-bottom: 2.5%;
  margin: 0;
  font-size: 2em;
}

p {
  font-size: 1em;
}

ul {
  list-style: decimal;
}

li {
  margin-top: 2.5%;
}

.navList {
  text-decoration: none;
  color: black;
}

.navList:hover {color: #FE5722;}

footer {
  width: 100%;
  height: 2.5%;
  left: 0;
  background-color: black;
  color: white;
  text-align: center;
  padding-top: 0.5%;
}

.intro {
  display: block;
  margin-top: 2.5%;
  background-color: #f5f5f5;
  width: 30%;
  margin-left: 35%;
  margin-bottom: 2.5%;
  text-align: justify;
  font-size: 1.25em;

}

.imgreferenceLinks {
  display: block;
  color: white;
  font-size: 10px;
  background-color: black;
  text-align: center;
  z-index: 1;
  padding: 0;
  margin: 0;
  width: 70%;
  margin-left: 15%;
}
.imgreferenceLinks:hover {color: #FE5722;}

.referenceLinks {
  color: black;
}
.referenceLinks:hover {color: #FE5722;}