styles.css

body {
	font-family: Roboto;
	background-image: url("image/background.png");
	opacity: 0.7;
	background-repeat: no-repeat; 
	background-size: 100% 100%;

	height:80vh;
}

#container {
  height: 520px;
  width: 390px;
  margin: 100px auto;
  margin-right: 60px;
  background: #e3e5e8;
  -webkit-border-radius: 20px;
  -moz-border-radius: 20px;
}

h1 {
  background: black;
  color: white;
  margin: 0;
  padding: 10px 100px;
  text-transform: uppercase;
  font-size: 20px;
  font-weight: bold;
  text-align:center;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}

p {
  padding-left: 20px;
}

form input[type="text"] {
  width=90px;
}

input {
  padding-left: 20px;
}

#billamt {
  font-size: 14px;
  color: #red;
  background-color: #red;
  width: 60%;
  padding: 5px 5px 8px 8px;
}

#billamt:focus {
  background: white;
  border: 3px solid #c24238;
  outline: none;
}

#peopleamt {
  font-size: 14px;
  color: #red;
  background-color: #red;
  width: 60%;
  padding: 5px 5px 8px 8px;
  margin-left: 20px;
}

#peopleamt:focus {
  background: white;
  border: 3px solid #c24238;
  outline: none;
}

.dollarSign {
  display: inline;
}

#serviceQual {
  padding: 2px 2px 2px 2px;
  margin-left: 20px;
  font-size: 16px;
}

button {
  text-transform: uppercase;
  font-weight: bold;
  display: block;
  margin: 50px auto;
  background:#bf2f15;
  border-radius: 50px;
  width: 250px;
  height: 50px;
  font-size: 17px;
  color: white;
}

button:hover {
  background: #bfb915;
  border-bottom-color: #111;
}

button:active {
  position: relative;
  top: 1px;
}

#totalTip {
  font-size: 30px;
  margin-top: 1px;
  text-align: center;
}

#totalTip:before {
  content: "Tip amount";
  font-size: 20px;
  font-weight: bold;
  display: block;
  text-transform: uppercase;
}

#totalTip sup {
  font-size: 20px;
  top: -18px;
}

#totalTip small {
  font-size: 20px;
  font-weight: bold;
  display: block;
}