* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100vh;
  background: url(./technics-clock-timepiece-laser-wallpaper-preview.jpg);
  background-size: cover;
  background: linear-gradient(to top left, black, aqua , aquamarine) center fixed;
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  display: flex;
}

.main {
  color: black;
  font-size: 3rem;
  margin-bottom: 10px;
  font-family: "Times New Roman", Times, serif;
  /* text-shadow: 10px 0 10px gray; */
  background-image: url(./gradient-indigo-background-illustration-free-photo.jpg);
  background-clip: text;
  color: transparent;
  background-color: white;
}
.stopWatch {
  text-align: center;
  background: #333;
  background: #0e0e0e;
  padding: 30px;
  border-radius: 15px;
  transition: box-shadow 0.7s;
}
.stopWatch:hover {
  /* border: 5px double; */
  box-shadow: 0 0 20px #000;
}
.head1 {
  font-size: 2.5rem;
  color: aquamarine;
  font-family: serif;
  margin-bottom: 20px;
}
#display {
  font-size: 3rem;
  margin-bottom: 30px;
  letter-spacing: 2px;
}
button {
  padding: 10px 20px;
  margin: 5px 10px;
  font-size: 1.2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}
.startBtn {
  background: green;
  color: white;
  transition: box-shadow 0.3s;
  transition: border 0.3s;
}
.startBtn:hover {
  box-shadow: 0 0 10px green;
  border: 3px double;
}
.stopBtn {
  background: red;
  color: white;
  transition: box-shadow 0.3s;
  transition: border 0.3s;
}
.stopBtn:hover {
  box-shadow: 0 0 10px red;
  border: 3px double;
}
.resetBtn {
  background: gray;
  color: white;
  transition: box-shadow 0.3s;
  transition: border 0.3s;
}
.resetBtn:hover {
  box-shadow: 0 0 10px gray;
  border: 3px double;
}