.spAuth {
  position: fixed;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}
.formAuth {
  /*position: fixed;*/
  box-shadow: 3px 4px 10px #ccc;
  margin: 0 auto;
}
.formAuth input {
  border-radius: 10px;
}
.authBtn {
  float: right;
  padding: 10px;
  background: #0f0;
  color: #fff;
}