body {
  background: rgb(240, 78, 33);
  height: 100%;
  font-family: "Roboto", sans-serif;
}
.wrapper {
  width: 800px;
  margin: 30px auto;
  color: #fff;
  text-align: center;
}
h1,
h2,
h3 {
  font-weight: 100;
  font-size: 2.6em;
  text-transform: uppercase;
}

#seconds,
#tens{
  font-size: 2em;
}

button {
  border-radius: 5px;
  background: rgb(240, 78, 33);
  color: #fff;
  border: solid 1px #fff;
  text-decoration: none;
  cursor: pointer;
  font-size: 1.2em;
  padding: 18px 10px;
  width: 180px;
  margin: 10px;
  outline: none;
  -webkit-transition: all 0.5s ease-in-out;
-moz-transition: all 0.5s ease-in-out;
transition: all 0.5s ease-in-out;
}

button:hover {
  background-color: white;
  border: 1px solid white;
  color: rgb(240, 78, 33);
}