style.css

@import url('https://fonts.googleapis.com/css?family=Raleway:300');

body {
  background-color: #2E2E2E;
  color: #616161;
  font-family: 'Raleway', sans-serif;
}

.wrapper {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 100vh;
  align-items: center;
  justify-items: center; /* adjusted */
}

.inner-wrapper {
  height: 55%;
}

/* HEADER */
h1 {
  text-align: center;
  color: #f0f0f0;
  font-size: 3em;
  margin-bottom: 0;
}
/* /HEADER */

/* SUBTITLE */
#subtitle {
  text-align: center;
  margin: 10px;
}

#subtitle a {
  text-decoration: none;
  color: #817171;
}

#subtitle a:hover {
  color: #a1a1a1;
}

#subtitle span {
  display: inline;
  margin-left: 10px;
  margin-right: 10px;
}
/* /SUBTITLE */

/* INPUT */
input#ip {
  border: 0;
  border-bottom: 2px solid #414141;
  width: 100%;
  font-size: 30px;
  font-family: 'Raleway', sans-serif;
  line-height: 35px;
  height: 70px;
  text-align: center;
  padding: 10px;
  background: transparent;
	color: #525252;
  font-weight: 300;
  letter-spacing: 10px;
}

input#ip:focus {
  outline: 0;
	color: #BBDEFB;
}
/* /INPUT */

/* RESULT */
#result {
  margin: 10px;
  font-size: 50px;
  color: #616161;
}

#result span {
  font-weight: bold;
  color: #817171;
}
/* /RESULT */