.limiter {
  width: 100%;
  margin: 0 auto;
}

.container-login100 {
  width: 100%;  
  min-height: 100vh;
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  padding: 15px;

  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  position: relative;
  z-index: 1;  
}

.container-login100::before {
  content: "";
  display: block;
  position: absolute;
  z-index: -1;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-color: rgba(0,0,0,0.65);
}