style.css

/* CSS files add styling rules to your content */

body {
  font-family: helvetica, arial, sans-serif;
  margin: 2em;
  background-color: rgb(0,0,255);
  color: rgb(230,230,250); 
}

h1 {
  color: rgb(255,215,0); /*red, green, blue */
  font-family: helvetica, arial, sans-serif; 
}

button {
  padding: 20px;
  border-radius: 30px;
  color: rgb(0,0,0);
  background-color: rgb(255,0,0);
}

#gameButtonArea > button {
  width:150px;
  height:150px;
  margin:2px;
}

.hidden {
  display: none;
}

#button1 {
    background: lightgreen;
}
#button1:active, #button1.lit {
    background: green
}

#button2 {
    background: lightblue;
}
#button2:active, #button2.lit {
    background:blue;
}

#button3 {
    background: pink;
}
#button3:active, #button3.lit {
    background:red;
}

#button4 {
    background: lightyellow;
}
#button4:active, #button4.lit {
    background:yellow;
}

#button5 {
    background: rgb(31,178,178);
}
#button5:active, #button5.lit {
  
    background: rgb(32,31,178);
}

#button6 {
    background: rgb(0,255,0);
}
#button6:active, #button6.lit {
  
    background: rgb(2,49,2);
}