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

html{
  font-size: 10px;
}

body{
  background:#eee;
  font-family: Sans-Serif;
}

.container{
  width: 90%;
  margin: auto;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cover{
  width: 100%;
  background: #005490;
  color: #fff;
  border-radius: .5rem;
  padding: 2rem;
  text-align: center;
}

h1{
  font-size: 8rem;
  text-align: center;
}

.counter{
  display: inline-block;
  font-size: 7rem;
  border: 1px solid;
  padding: .3rem 2rem;
  margin: 2rem 0;
}

.signs{
  width: 100%;
  margin: 0rem 0 4rem 0;
}

.add, .minus, .reset{
  padding: 1rem 1.5rem;
  font-size: 2rem;
  transition: .5s;
  border-radius: .2rem;
}

.add{
  background: #005500;
}

.minus{
  background: #990000;
}

.reset{
  background: #fff;
  color:#000;
}

.add{
  margin: 0 0 0 10rem;
}

.minus  {
  margin: 0 10rem 0 0;
}