style.css

@import url(https://fonts.googleapis.com/css?family=Open+Sans); 

body {
  
  background-color: black;
  background: url(background.svg) fixed;
  margin: 10px;
  color:#ecf0f1;
}

.bouncy {
 transition: all 0.5s ease;  
}

center {
  padding-top:15px;
  padding-bottom:30px;
}

.input {
   background-color: #e74c3c;
   border-radius: 10px 10px 0px 0px;
   padding: 10px; 
}

.numBox {
  display: inline-block;
  height: 35px;
  vertical-align: text-bottom;
  font-size: 20px;
  width: 70px;
  font-family: "open sans";
  border: 3px solid lightgray;
  border-radius: 50px;
  text-align: center;
}

.numBox:hover {
 border-color: slategray;
 transition: all 0.5s ease; 
}

.numBox:focus {
 outline: none; 
}

.centeredText {
  text-align: center;
}

::-webkit-input-placeholder {
   text-align: center;
}

:-moz-placeholder { /* Firefox 18- */
   text-align: center;  
}

::-moz-placeholder {  /* Firefox 19+ */
   text-align: center;  
}

:-ms-input-placeholder {  
   text-align: center; 
}

#header-image {
  background-color: #172e3e;
  padding: 30px;
  border-radius: 30px; 
}

.heading {
  text-align: center;
  font-size: 40px;
  border-radius: 10px 10px 0px 0px;
  font-family: 'Montserrat';
  background-color: #3498db;
  color: #ecf0f1;
  margin: auto;
  max-width: 800px;
  box-sizing: border-box;
  padding: 30px;
  box-shadow: 0 5px 10px #000;
}

.specialheading {
  padding: 0;
  padding-bottom: 30px;
}

.centeredImage {
    display: block;
    margin: auto;
}

h2 {
 font-size: 2.5vw; 
}

p {
  font-size: 1px;
}

.button {
  font-size: 30px;
    padding: 10px;
    border-radius: 15px;
    border: 0px;
    border-bottom: 5px solid #312e2e;
    background-color: #3498db;
    color: #efe3e3;
    font-family: "Open Sans";
  
 transition: all 0.3s ease; 
}

.button:hover {
 color:  #3498db;
  background-color: #ecf0f1;
 transition: all 0.3s ease; 
}

.button:focus {

  outline: none;
}

.button:active {
  padding:15px;
    border-bottom: 0px solid #312e2e;
  outline: none;
}