html {
  height: 100%;
}
footer {
  position: fixed;
  bottom: 30px;
  left: 0;
  text-align: center;
  width: 100%;
}

footer img {
  width: 140px;
  display: block;
  margin: 0 auto;
  margin-bottom: 10px;
  /* tint white */
  -webkit-filter: brightness(0) invert(1);
  filter: brightness(0) invert(1);

}

.form-logo {
  position: relative;
  width: auto;
  max-width: 95%;
  max-height: 125px !important;

}
body {
  height: 100%;
  display: flex;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
  background-size: cover;
  background-color: #333;
}
.public-form {
  background-color: rgba(256, 256, 256, 0.99);
  border-radius: 7px;
  box-shadow: 0 0 50px rgba(0, 0, 0, 0.3);
}
footer small {
  color: #fff;
  opacity: 1;
  background-color: rgba(0, 0, 0, 0);
  padding: 3px 10px;
  border-radius: 7px;
  font-size: 12px;
}