* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Franklin Gothic Medium", "Arial Narrow", Arial, sans-serif;
}
body {
  color: white;
  background-color: rgb(6, 116, 195);
}
.container {
  width: 100%;
  padding: 10px 0;
  text-align: center;
}
.timer {
  display: inline-block;
  padding: 10px;
  width: 600px;
  box-sizing: border-box;
}
main {
  width: 25rem;
  height: 25rem;
  border-radius: 50%;
  text-align: center;
  margin: 0 auto;
  margin-bottom: 2rem;
}
h1 {
  margin: 20px auto;
  font-size: 2rem;
}
.button-container {
  margin-top: 20px;
  display: flex;
  justify-content: center;
}
.pomodoro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  position: relative;
  margin: 2.5rem 0;
  text-align: center;
  border-radius: 50%;
  background: #151932;
  box-shadow: 20px 20px 42px #0e1021 -20px -20px 42px #243281;
}
.pomodoro:before {
  content: "";
  position: absolute;
  border: 10px solid chartreuse;
  border-radius: 50%;
  width: 22rem;
  height: 22rem;
}

.time {
  font-size: 5rem;
  margin: 20px auto;
}
.button-container {
  margin-top: 20px;
  display: flex;
  justify-content: center;
}
.button {
  background-color: #2e325a;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  margin: 5px;
  cursor: pointer;
  transition: all 0.2s ease-in;
}
.button.active,
.button:hover {
  background-color: #020323;
}

.hidden {
  display: block;
}
.timer-display {
  font-size: 5rem;
  margin-top: 20px;
  font-weight: bold;
}
.buttons {
  margin-top: 20px;
}

#start,
#stop {
  background-color: #0e325a;
  color: #fff;
  border: none;
  padding: 10px 20px;
  margin: 10px;
  cursor: pointer;
  transition: all 0.2s ease-in;
}

#stop:hover {
  background-color: tomato;
}
#start:hover {
  background-color: #219a52;
}
#timer-message {
  color: white;
  background-color: red;
  display: none;
  padding: 5rem;
  font-size: 1rem;
  text-align: center;
  border-radius: 1rem;
}