*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: consolas;
}
.btn{
  background: none;
  color: #111;
  padding: 15px 60px;
  font-size: 1em;
  margin: 20px auto;
  max-width: 200px;
  display: block;
  outline: none;
  border: 2px solid #111;
  cursor: pointer;
}
.container{
  display: flex;
  flex-wrap: wrap;
}
.box{
  width: 20%;
  height: 150px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f00;
  border: 2px solid #fff;
  color: #fff;
  font-size: 1.5em;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}