html,
body {
  height: 100%;
}

body {
  text-align: center;
  padding: 2em;
  font-size: 1.25em;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

h1.logo {
  margin-bottom: 2em;
}

a {
  color: #fff;
}

.logo img {
  height: 2.5em;
  max-width: 100%;
}

footer nav ul {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

footer nav li {
  margin: 0 1em;
  display: block;
  list-style: none;
}

.textSubmitCombo {
  display: inline-flex;
  overflow: hidden;
  width: 20em;
  max-width: 100%;
}

.textSubmitCombo input[type="text"] {
  flex-grow: 1;
  flex-shrink: 1;
  width: 8em;
  border-radius: 0.5em 0 0 0.5em;
}

.textSubmitCombo button {
  flex-grow: 0;
  flex-shrink: 0;
  border-radius: 0 0.5em 0.5em 0;
}