not-gwent-online/site/client/assets/sass/_modal.scss

.wrap-modal {
  max-width: 600px;
  margin: 0 auto;
}

.wrap-modal-search {
  max-width: 250px;
  margin: 0 auto;
}

.modal {
  position: fixed;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  background: rgba(14, 27, 43, .5);
  z-index: 10;
  opacity: 0;
  visibility: hidden;

  @include transition();

  &.active {
    visibility: visible;
    opacity: 1;
  }
}

.modal-banner {
  z-index: 20;
  background: rgba(6, 13, 22, .95);
  width: 100%;
  color: #fff;
  padding: 50px 0;
  margin: 24vh 0 0 0;
  float: left;

  @include transition();

  .active & {
    margin: 25vh 0 0 0;
  }
}

.icon-content-load {
  background: url(../img/content-load.gif) no-repeat;
  //float: left;
  width: 32px;
  height: 32px;
  opacity: .9;
  display: block;
  margin: 0 auto;
}

.modal-para {
  font-size: 17px;
  text-transform: uppercase;
  font-weight: 300;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
  color: #8798ac;
  float: left;
  clear: both;
  width: 100%;
  text-align: center;
}

.btn-cancel {
  float: left;
  clear: both;
  margin: 50px 0 0 0;
  width: 100%;
  text-align: center;
  color: darken(#8798ac, 30%);
  cursor: pointer;
  text-transform: uppercase;

  @include transition();

  &:hover {
    color: #8798ac;
  }
}