body {
  background-color: #232323;
  margin: 0;
  font-family: 'Avenir', 'Helvetica';
  
}
.square {
  width: 30%;
  margin: 1.66%;
  border-radius: 15%;
  background-color: purple;
  padding-bottom: 30%;
  float: left;
  transition: background 0.6s;
}
#container {
  max-width: 600px;
  margin: 20px auto;
}
h1 {
  color: white;
  text-align: center;
  font-weight: normal;
  background-color: #336699;
  margin: 0;
  text-transform: uppercase;
  line-height: 1.1;
  padding: 20px 0;
}

#result {
  
  display: inline-block;
  width: 20%;

}

#stripe {
  background-color: white;
  height: 30px;
  text-align: center;
}
.selected{
  color: white;
  background-color: #336699;
}

#head{
  font-size: 200%;
}
button{
  border: none;
  background-color: none;
  text-transform: uppercase;
  height: 100%;
  font-weight: 700;
  color: steelblue;
  letter-spacing: 1px;
  /* font-size: inherit;
  anything that will happen to button in our case its just changing the background color of that buttons
  it will perform transition  */
  transition: all, 1.0s;
  /* after clicking button it will show an utline to it so to remov it */
  outline: none;

}
button:hover{
  color: white;
  background-color: #336699;
}