/*
html,
body {
  padding-top:100px;
  background-size:cover;
  font-family: "Helvetica Neue", "Futura", "Trebuchet MS", Arial;
}

body {
  display: -ms-flexbox;
  display: -webkit-box;
  display: flex;
  -ms-flex-align: center;
  -ms-flex-pack: center;
  -webkit-box-align: center;
  align-items: center;
  -webkit-box-pack: center;
  justify-content: center;
  padding-top: 4px;
  padding-bottom: 4px;
  background-color: #f5f5f5;
}
*/

.jumbotron-billboard .img {
    margin-bottom: 0px;
    opacity: 0.13;
    color: #fff;
    background: #000 url("https://cutmp3.net/images/microphone.jpg") top center no-repeat;
    width: 100%;
    height: 100%;
    background-size: cover;
    overflow: hidden;
    position:absolute;
    top:0;
    left:0;
    z-index:1;
}
.jumbotron h2 {margin-top:0;}
.jumbotron {
  position:relative;
  padding-top:50px;
  padding-bottom:50px;
}
.jumbotron .container {
  position:relative;
  z-index:2;
}

@media screen and (max-width: 768px) {
  .jumbotron {
    padding-top:20px;
    padding-bottom:20px;
  }
}


/*
  z-index: -1;
  opacity: 0.8;

  background-color: #f5f5f5;
  opacity: 0.9;
*/

.form-signin {
  width: 100%;
  max-width: 800px;
  padding: 0px;
  margin: 0 auto;
  
}

.form-label-group {
  position: relative;
  margin-bottom: 1rem;
}

.form-label-group > input,
.form-label-group > label {
  padding: var(--input-padding-y) var(--input-padding-x);
}

.form-label-group > label {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  margin-bottom: 0; /* Override default `<label>` margin */
  line-height: 1.5;
  color: #495057;
  border: 1px solid transparent;
  border-radius: .25rem;
  transition: all .1s ease-in-out;
}

.form-label-group input::-webkit-input-placeholder {
  color: transparent;
}

.form-label-group input:-ms-input-placeholder {
  color: transparent;
}

.form-label-group input::-ms-input-placeholder {
  color: transparent;
}

.form-label-group input::-moz-placeholder {
  color: transparent;
}

.form-label-group input::placeholder {
  color: transparent;
}

.form-label-group input:not(:placeholder-shown) {
  padding-top: calc(var(--input-padding-y) + var(--input-padding-y) * (2 / 3));
  padding-bottom: calc(var(--input-padding-y) / 3);
}

.form-label-group input:not(:placeholder-shown) ~ label {
  padding-top: calc(var(--input-padding-y) / 3);
  padding-bottom: calc(var(--input-padding-y) / 3);
  font-size: 12px;
  color: #777;
}