/*** font-family ---> Protest Strike ***/

@import url("https://fonts.googleapis.com/css2?family=Protest+Strike&display=swap");

/*** layout ***/

* {
  margin: 0;
  padding: 0;
  box-sizing: inherit;
}

body {
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #000;
}

.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-content: space-between;
  width: 400px;
  height: 400px;
}

.box {
  width: 24.2%;
  height: 24.2%;
}

.number {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  /* The background-color is set from javascript */
  color: #fff;
  border: 2px solid #ffe4c4;
  border-radius: 5px;
  font-family: "Protest Strike", sans-serif;
  font-size: 60px;
  font-weight: 800;
  cursor: pointer;
}

@media (max-width: 450px) {
  .container {
    width: 85vw;
    height: 85vw;
  }
}

@media (max-width: 440px) {
  .number {
    font-size: 55px;
  }
}

@media (max-width: 380px) {
  .number {
    font-size: 50px;
  }
}

@media (max-width: 320px) {
  .number {
    font-size: 45px;
  }
}

@media (max-width: 300px) {
  .number {
    font-size: 40px;
  }
}