@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap");

* {
  box-sizing: border-box;
}

body {
  background-color: #111;
  font-family: "Roboto", sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: hidden;
  margin: 0;
}

.header-container {
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.buttons {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  margin: 10px;
  max-width: 400px;
}

button {
  height: 50px;
  width: 80px;
  border-radius: 5px;
  margin: 2px;
  overflow: hidden;
  text-align: center;
  font-size: 1rem;
  color: #fff;
  transition: transform 10s linear;
}

button:active {
  transform: scale(90%);
}

#red {
  background-color: red;
}
#blue {
  background-color: blue;
}
#green {
  background-color: green;
}
#grey {
  background-color: grey;
}
#red {
  background-color: red;
}
#random {
  background-color: #000;
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 400px;
}

.square {
  background-color: #1d1d1d;
  box-shadow: 0 0 2px #000;
  height: 16px;
  width: 16px;
  margin: 2px;
  transition: 2s ease;
}

.square:hover {
  transition-duration: 0s;
}