a {
  text-decoration: none;
  color: #000;
}

html, body {
  margin: 0px;
  padding: 0px;
  height: 100%;
  font-family: 'Istok Web', sans-serif;
}

.text {
  padding-top: 25px;
  font-family: 'Istok Web', sans-serif;
  font-size: 0.8em;
  text-align: center;
}

.impressum {
  padding: 10px;
  padding-top: 25px;
  font-family: 'Istok Web', sans-serif;
  font-size: 0.8em;
  text-align: left;
}

.logo {
  text-align: center;
}

.box {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 680px;
  height: 300px;
  padding: 20px;
  margin-left: -340px;
  margin-top: -150px;
  background: #fff;
  box-sizing: border-box;
}

.footer {
  position: absolute;
  bottom: 10px;
  width: 100%;
}