/* Reset margin/padding */
* {
  margin: 0;
  padding: 0;
}

/* Body styling */
body {
  height: 100vh;
  color: white;
  text-align: center;
  font-family: "Trebuchet MS", "Lucida Sans Unicode", "Lucida Grande",
    "Lucida Sans", Arial, sans-serif;
  margin-top: 10rem;
}

/* Heading */
h1 {
  color: black;
  padding: 10px;
}

/* Color buttons */
.redButton {
  width: 90px;
  height: 90px;
  background-color: red;
  border-radius: 50%;
  border: none;
}

.blueButton {
  width: 90px;
  height: 90px;
  background-color: blue;
  border-radius: 50%;
  border: none;
}

.greenButton {
  width: 90px;
  height: 90px;
  background-color: green;
  border-radius: 50%;
  border: none;
}

.yellowButton {
  width: 90px;
  height: 90px;
  background-color: yellow;
  border-radius: 50%;
  border: none;
}

/* Start button */
button {
  background-color: lightgreen;
  color: white;
  width: 100px;
  padding: 10px 0;
  border: 0;
  cursor: pointer;
  font-weight: bold;
  font-family: inherit;
  margin: 20px 0;
}

/* Start game hover */
#startgamebtn:hover {
  background-color: rgb(48, 234, 48);
}

/* Score display */
.score {
  color: black;
}

/* Container box */
.box {
  width: 50vw;
  margin: auto;
  box-shadow: 10px 10px 10px 10px lightgray;
  border-radius: 15px;
}