body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background: #000000;
}

#container {
  height: 100%;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  background: #f7f7f7;
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.1);
  border-radius: 20px;
  -webkit-border-radius: 20px;
  -moz-border-radius: 20px;
  
}

h1 {
  background: #070bf0;
  color: white;
  margin: 0;
  padding: 10px;
  text-transform: uppercase;
  font-size: 18px;
  text-align: center;
  font-weight: normal;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
}

p {
  padding-left: 20px;
}

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

input {
  padding-left: 20px;
}

#startGrade {
  font-size: 14px;
  /*color: #2980b9;*/
  color: darkblue;
  background-color: #f7f7f7;
  width: 60%;
  padding: 5px 5px 8px 8px;
}

#startGrade:focus {
  background: #fff;
  border: 3px solid #2980b9;
  outline: none;
}

#peopleamt {
  width: 60%;
  padding: 5px 5px 8px 8px;
  margin-left: 20px;
  color: red;
  background-color: #f7f7f7;
  font-size: 14px;
}

.dollarSign {
  display: inline;
}

#serviceQual {
  padding: 13px 13px 20px 20px;
  margin-left: 20px;
  font-size: 25px;
}

button {
  text-transform: uppercase;
  font-weight: bold;
  display: block;
  margin: 30px auto;
  background: #070bf0;
  border-radius: 15px;
  width: 200px;
  height: 50px;
  font-size: 17px;
  color: white;
}

button:hover {
  background: #02006b;
  border-bottom-color: #111;
}

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

#totalTip {
  font-size: 30px;
  margin-top: 5px;
  text-align: center;
}

#totalTip:before {
  content: "Βαθμός:";
  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;
}

#calculator {
  text-align: center;
}