stylesheet.css

html {
  position: relative;
  /* needed for sticky footer */
}

body {
  height: 100%;
  padding-bottom: 60px;
  background-color: #DD5E55;
  color: #FFFFFF;
  font-family: 'Roboto';
}

main {
  margin: auto;
  text-align: center;
  width: 960px;
}

footer {
  text-align: center;
  position: absolute;
  height: 60px;
  width: 100%;
  bottom: 0px;
  left: 0px;
}

a {
  color: #FFFFFF;
  text-decoration: none;
}

a:visited {
  color: #F3A9FF;
}

a:hover {
  color: #FFE4B4;
}

footer a:not(:first-child) {
  margin-left: 1rem;
}

#title {
  font-family: 'Montserrat';
  text-align: center;
}

#readme {
  margin: auto;
}

#form {
  clear: both;
}

#inputbox {
  width: 25%;
  font-size: 18px;
  margin: 0 20px;

  color: #FFFFFF;
  border: 0px;
  border-bottom: 2px dotted #FFFFFF;
  background-color: transparent;
}

#inputbox:focus {
  outline: 0px;
}

#caps-checkbox {
  display: none;
}

#caps-checkbox+label {
  text-decoration: line-through;
}

#caps-checkbox:checked+label {
  text-decoration: none;
}

#caps-checkbox:checked+label div {
  border-style: double;
  background-color: #FFFFFF;
  border-color: #DD5E55;
}

#box {
  display: inline-block;
  position: relative;
  top: 6px;
  width: 1em;
  height: 1em;
  border: 3px solid #FFFFFF;
  margin-right: 10px;
}

#submit-button {
  color: #FFFFFF;
  background-color: transparent;
  border-radius: 10px;
  border: 3px solid #FFFFFF;
  padding: 5px 10px;
  margin-left: 10px;
  transition: all .3s;
}

#submit-button:hover {
  background-color: #FFFFFF;
  color: #DD5E55;
  transition: all .3s;
}

#results {
  font-family: Courier;
  text-align: center;
  margin: 1rem 0;
}

.multiplier {
  font-style: italic;
  opacity: .6;
  margin-left: .25em;
}

/* Large Devices, Wide Screens */
@media only screen and (max-width : 1200px) {
  main {
    width: 960px;
  }
}

/* Medium Devices, Desktops */
@media all and (max-width : 992px) {
  main {
    width: 750px;
  }
}

/* Small Devices, Tablets */
@media all and (max-width : 768px) {
  main {
    width: 400px;
  }

  #inputbox {
    width: 100%;
    margin: 0 0 10px 0;
  }
}

/* Extra Small Devices, Phones */
@media all and (max-width : 480px) {
  main {
    width: auto;
  }

}

/* Custom, iPhone Retina */
@media all and (max-width : 320px) {}