@font-face {
  font-family: digital-7;
  src: url(digital-7-font/Digital7-1e1Z.ttf);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  width: 70%;
  height: 100%;
  margin: 0 auto;
  text-align: center;
  background-color: #23555c;
  color: white;
  font-family: 'Orbitron', sans-serif;
}
button {
  background-color: transparent;
  border: none;
  color: white;
  outline: none;
  width: 4rem;
}
button:hover {
  color: #4cd137;
}
#stop {
  display: none;
}
.set-timer {
  display: flex;
  justify-content: center;
  font-size: 2rem;
}
.timer-wrapper {
  width: 80%;
  margin: 0 auto;
  /* background-color: red; */
  line-height: 5em;
}
.clock {
  display: flex;
  justify-content: center;

  flex-wrap: wrap;
  border: solid 6px grey;
  border-radius: 35px;
}
.m-display {
  display: flex;
  justify-content: center;

  font-family: digital-7, sans-serif;
  font-size: 6rem;
  margin-bottom: 2rem;
}
.s-display {
  display: flex;
  justify-content: center;
  font-family: digital-7, sans-serif;
  font-size: 6rem;
}
#colon {
  font-size: 3rem;
}
#m-zero {
  display: none;
}
#session-length {
  margin-left: 15px;
  margin-right: 15px;
}
#time-up-message {
  font-size: 3rem;
  margin-bottom: 3rem;
  font-weight: bold;
  color: #e84118;
}
.inside-title {
  width: 100%;
}
.hide {
  display: none;
}
.show {
  display: block;
}