style.css

@import 'https://fonts.googleapis.com/css?family=Dosis';
body {
  margin: 5em;
  background-image: 
    linear-gradient(
      rgba(0, 0, 0, 0.5),
      rgba(0, 0, 0, 0.5)
    ),
    url("img/background.png");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  font-family: 'Dosis', sans-serif;
  color: white;
  text-align: center;
}
button {
  margin-bottom: 1em;
  width: 100%;
  font-size: 2.5em;
  height: 2em;
  box-sizing: content-box;
}
h1 {
  font-size: 10em;
}
h2 {
  font-size: 7.5em;
}
h3 {
  font-size: 5em;
}
p {
  font-size: 5em;
}
form {
  font-size: 5em;
}
input {
  background-color: rgba(255,255,255,0.5);
  border-radius: 1em;
  border-style: solid;
  border-color: white;
  border-width: 0.03em;
  font-family: 'Dosis', sans-serif;
  text-align: center;
  color: rgba(255,255,255,0.75);
  font-size: 0.9em;
}
input[type="text"] {
    background-color: rgba(255,255,255,0.5);
    border-radius: 1em;
    border-style: solid;
    border-color: white;
    border-width: 0.03em;
}
input[type="text"], textarea, keygen {
    font-family: 'Dosis', sans-serif;
    text-align: center;
    color: rgba(255,255,255,0.75);
}
input[type="submit"], input[type="button"] {
  margin-bottom: 1em;
  width: 1em;
  font-size: 1em;
  height: 1em;
  box-sizing: content-box;
  background-color: rgba(255,255,0,0.5);
  color: rgba(0,0,0,0.75);
  padding: 0.75em;
  width: 50%;
  padding-top: 0.5em;
  padding-bottom: 0.85em;
}

#done {
  font-size: 3em !important;
  width: 90% !important;
}

.button {
    background-color: rgba(255,255,255,0.5);
    border-radius: 1em;
    border-style: solid;
    border-color: white;
    border-width: 0.03em;
    font-family: 'Dosis', sans-serif;
    text-align: center;
    color: rgba(255,255,255,0.75);
    font-size: 0.9em;
    text-rendering: auto;
    color: initial;
    letter-spacing: normal;
    word-spacing: normal;
    text-transform: none;
    text-indent: 0px;
    text-shadow: none;
    display: inline-block;
    text-align: start;
    margin: 0em 0em 0em 0em;
    align-items: flex-start;
    text-align: center;
    cursor: default;
    color: buttontext;
    background-color: buttonface;
    box-sizing: border-box;
    padding: 2px 6px 3px;
    border-width: 2px;
    border-style: outset;
    border-color: buttonface;
    border-image: initial;
    /* -webkit-appearance: push-button; */
    user-select: none;
    white-space: pre;
    -webkit-appearance: textfield;
    background-color: white;
    /* -webkit-rtl-ordering: logical; */
    user-select: text;
    cursor: auto;
    padding: 1px;
    border-width: 2px;
    border-style: inset;
    border-color: initial;
    border-image: initial;
    /* -webkit-writing-mode: horizontal-tb; */
    margin-bottom: 1em;
    width: 1em;
    font-size: /*1em*/5em;/* 1EM IN A FORM!!!!*/
    height: 1em;
    box-sizing: content-box;
    background-color: rgba(255,255,0,0.5);
    color: rgba(0,0,0,0.75);
    padding: 0.75em;
    width: 50%;
    padding-top: 0.5em;
    padding-bottom: 0.85em;
}