body {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100vh;
  background-image: url(./wallpapersden.com_lavender-field-at-starry-night_1920x1080.jpg);
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
}
.container{
  width: 500px;
  height: 330px;
  border: 2px solid transparent;
  background-color: rgba(46, 43, 40, 0.61);
  border-radius: 25px;
}
h1{
    font-size: 65px;
    font-family: sans-serif;
    color: white;
}

#stopWatch {
  font-size: 65px;
  font-weight: bold;
  font-family: monospace;
  color: white;
  border-radius: 60px;

}
button {
  padding: 10px;
  width: 100px;
  margin: 5px;
  font-size: 16px;
  border-radius: 30px;
  margin-top: 10px;
  border: none;
  transition: background 3s ;
  
}
button:hover{
  cursor: pointer;
  background-color: rgb(207, 253, 253);
}

@media(max-width:320px) {
    h1{ font-size:55px}
    #stopWatch{
         font-size: 50px;
    }
}