* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
}

p {
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1140px;
  margin: auto;
}

header {
  position: relative;
  background-color: #0048ce;
  padding: 15px 0px;
}

header h5 {
  font-size: 48px;
  line-height: 58px;
  color: #fff;
}

section {
  height: 100vh;
  display: flex;
  align-items: center;
}

.stopwatch {
  background-color: #141313;
  height: 450px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  position: relative;
}

.stopwatch.card {
  border: none;
  width: 550px;
  margin: auto;
}

.stopwatch__Display {
  position: absolute;
  top: 55px;
  width: 650px;
  height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(-135deg, #0048ce, #008bfd);
  padding: 25px 0px;
  font-size: 48px;
  color: #fff;
}

.stopwatch__action {
  padding: 30px 0px;
  position: absolute;
  bottom: 0px;
}

.stopwatch__action .btn {
  color: #000;
  background-color: #fff;
  border: 0;
  border-radius: 0;
  display: inline-block;
  padding: 15px 30px;
  margin: 0px 15px;
  font-weight: bold;
  font-size: 18px;
  cursor: pointer;
  transition: all 0.4s linear;
}

.stopwatch__action .btn:active {
  transform: translateY(5px);
}

@media (max-width: 767px) {
  .stopwatch {
    margin: 0px 30px;
  }
  .stopwatch__Display {
    width: 80%;
    height: 150px;
  }
}

@media (max-width: 575px) {
  .stopwatch.card {
    width: 325px;
  }
  .stopwatch__Display {
    font-size: 24px;
  }
  .stopwatch__action {
    display: flex;
    align-items: center;
    margin: 0;
  }
  .stopwatch__action .btn {
    margin: 0;
    font-size: 16px;
  }
}

footer {
  background-color: #0048ce;
  text-align: center;
  padding: 15px 0px;
}

footer p {
  color: #fff;
}