styles.css

* {
  margin 0;
  padding 0;
}

body{
  background-color: black;
}

#container{
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

#triangleCanvas{
  min-width: 500px;
  min-height: 500px;
  background-color: white;
  margin: 20px;
  border: 3px solid #717b82;
  margin-bottom: 10px;
}

#pixels{
  color: white;
  margin: 5px;
  margin-bottom: 10px;
  font-size: 25px;
  font-weight: bold;
  font-family: sans-serif;
}

#test{
  color: white;
}

#triangleDescription{
  color: white;
  border: 3px solid white;
  width: 980px;
  height: 150px;
  padding: 10px;
  font-family: sans-serif;
  font-size: 18px;
}

.btn {
  background: #717b82;
  background-image: -webkit-linear-gradient(top, #717b82, #232526);
  background-image: -moz-linear-gradient(top, #717b82, #232526);
  background-image: -ms-linear-gradient(top, #717b82, #232526);
  background-image: -o-linear-gradient(top, #717b82, #232526);
  background-image: linear-gradient(to bottom, #717b82, #232526);
  -webkit-border-radius: 60;
  -moz-border-radius: 60;
  border-radius: 60px;
  font-family: Arial;
  color: #ffffff;
  font-size: 15px;
  padding: 10px 10px 10px 10px;
  text-decoration: none;
  margin-bottom: 10px;
}

.btn:hover {
  background: #232526;
  background-image: -webkit-linear-gradient(top, #232526, #717b82);
  background-image: -moz-linear-gradient(top, #232526, #717b82);
  background-image: -ms-linear-gradient(top, #232526, #717b82);
  background-image: -o-linear-gradient(top, #232526, #717b82);
  background-image: linear-gradient(to bottom, #232526, #717b82);
  text-decoration: none;
}