body {
  font-family: helvetica;
  font-size: 21px;
  max-width: 75em;
  margin: auto;
}

hr {
  margin-top: 10px;
  margin-bottom: 10px;
  border-top: 2px black;
}

select {
  font-size: 25px;
  margin-bottom: 25px;
  /* border: none; */
}

.centered-image {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/*Navigation start */
.topNavClass {
  /*background-color: #333;*/
  overflow: hidden;
  background-image: url("images/header.png");
  margin-bottom: 10px;
  float: center;
  border-radius: 20px;
}

.topNavClass a {
  color: white;
  padding: 14px 16px;
  text-decoration: none;
  text-align: center;
  font-size: 30px;
  display: block;
  float: left;
}

.topNavClass a.hover {
  background-color: #ddd;
  color: black;
}

.topNavClass a.active {
  background-color: orange;
  color: white;
}

/*Navigation end */

/*Jumbotron start */
.jumbotron {
  padding-top: 15px;
  padding-bottom: 30px;
  margin-bottom: 30px;
  color: inherit;
  background-color: #eee;
  padding-left: 10px;
  border-radius: 20px;
}

.jumbotron h1,
.jumbotron .h1 {
  color: inherit;
}

.jumbotron p {
  margin-bottom: 15px;
  font-size: 21px;
  font-weight: 200;
}

.jumbotron>hr {
  border-top-color: #d5d5d5;
}

/*Jumbotron end */

.hoverLinks a:link,
.hoverLinks a:visited {
  background-color: orange;
  color: black;
  padding: 14px 25px;
  border-radius: 5px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  margin-bottom: 5px;
}

.hoverLinks a:hover,
.hoverLinks a:active {
  background-color: black;
  color: white;
  margin-bottom: 5px;
}

.mainCols {
  position: relative;
  min-height: 1px;
  padding: 20px;
  border-radius: 25px;
  border-style: solid;
  margin-bottom: 10px;
}

.counter-container {
  display: inline-block;
  background-color: orange;
  border: 3px solid orange;
  border-radius: 20px;
  padding: 20px;
}

.digit {
  width: 60px;
  height: 100px;
  display: inline;
  align-items: center;
  justify-content: center;
  background-color: #000;
  color: #FFF;
  border: 5px solid #000;
  border-radius: 10px;
  font-size: 36px;
  font-weight: bold;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
  position: relative;
}

.digit:before {
  content: '';
  position: absolute;
  top: -5px;
  left: -5px;
  width: calc(100% + 10px);
  height: calc(100% + 10px);
  border: 1px solid #888;
  border-radius: 10px;
  pointer-events: none;
}