body,html {

  margin: 0;

  padding: 0;

  font-size: 1.2rem;

  text-align: center;

  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;

}

header {

  padding: 10px 25px;

  background-color: slategrey;

  color: white;

  margin-bottom: 20px;

}
main {

  margin-bottom: 30px;

}
.instructions-text {

  font-size: 1.2rem;

}
.cinqsens-image {

  width: 70%;
  max-width: 400px;
  margin-bottom: 0px;

}
.switch-button {

  background: #3498db;

  background-image: -webkit-linear-gradient(top, #3498db, #2980b9);

  background-image: -moz-linear-gradient(top, #3498db, #2980b9);

  background-image: -ms-linear-gradient(top, #3498db, #2980b9);

  background-image: -o-linear-gradient(top, #3498db, #2980b9);

  background-image: linear-gradient(to bottom, #3498db, #2980b9);

  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;

  color: #ffffff;

  font-size: 1.5rem;

  padding: 15px 40px 14px 40px;

  text-decoration: none;

  border: none;

  border-radius: 10px;

  margin-bottom: 20px;

}


.switch-button:hover {

  background: #3cb0fd;

  background-image: -webkit-linear-gradient(top, #3cb0fd, #3498db);

  background-image: -moz-linear-gradient(top, #3cb0fd, #3498db);

  background-image: -ms-linear-gradient(top, #3cb0fd, #3498db);

  background-image: -o-linear-gradient(top, #3cb0fd, #3498db);

  background-image: linear-gradient(to bottom, #3cb0fd, #3498db);

  text-decoration: none;
    

}
footer {

  background-color: aliceblue;
    
  font-size: 0.8rem;

  padding: 15px 30px;

  border-top: 1px solid lightblue;

}

.num-counter {
        padding: 5px 10px;
        background-color: black;
        color: white;
        font-weight: bold;
    }