html {
  height: 100%;
}

body {
  background-color: white;
  position: relative;
  min-height: 100vh;
  padding: 0;
  margin: 0;

  font-size: 14px;
}

main {
  padding: 0 20px 40px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

p {
  font-family: sans-serif;
  font-weight: bold;
  font-size: 14px;
}

p.title {
  font-style: italic;
  font-weight: 500;
  font-size: 16px;
}

h1#main-title {
  color: red;
  background-color: blue;
}

/* This is a CSS comment. This CSS 
* selects all input tags that have the 
* required attribute. */
input[required] {
  letter-spacing: 2px;
  text-decoration: underline;
}

/* This CSS selects all input tags that 
* have a type attribute with the value "text"*/
input[type="text"] {
  height: 10%;
  width: 10%;
}

/* Child selectors example */
#pos-list > li {
  border-color: red;
  border-style: dashed;
  border-width: 1px;
}

/* Adjacent selectors example */
h1 + p {
  font-weight: bold;
}

a:link {
  color: blue;
  text-decoration: underline;
}

a:visited {
  color: purple;
}

a:active {
  color: red;
}

a:hover {
  color: green;
  text-decoration: none;
}

input:focus {
  border: 1px solid #aaa;
}

/* CSS for navigation bar */

.navbar {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  width: 100%;
  height: 7%;
  z-index: 10;

  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: center;

  background-color: black;
  color: white;
  padding: 0px 0px;

  /* Debug border */
  /* border: solid red; */
}

.nav-list {
  display: flex;
  flex-direction: row;
  position: relative;
  right: 30px;
  list-style: none;
}

.navbar a {
  color: white;
  font-weight: bold;
  margin: 0 12px;
  text-decoration: none;
  letter-spacing: 2px;
}

/* CSS for page footer */

.footer {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: black;
  color: white;
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 2.5rem;
}