/**
// VARIABLES
$gray-darker:            lighten(#000, 13.5%) !default; // #222
$gray-dark:              lighten(#000, 20%) !default;   // #333
$gray:                   lighten(#000, 33.5%) !default; // #555
$gray-light:             lighten(#000, 46.7%) !default; // #777
$gray-lighter:           lighten(#000, 93.5%) !default; // #eee

$brand-primary:         #428bca !default;
$brand-success:         #5cb85c !default;
$brand-info:            #5bc0de !default;
$brand-warning:         #f0ad4e !default;
$brand-danger:          #d9534f !default;
*/
.container, .game-container, .conveyorBelt, .livingRoom, .book1.flashCardSky, .unscrambled-word, .b1u4a7, .b1u4a6 {
  width: 1000px;
  font-family: Arial, Helvetica, sans-serif;
  margin-left: auto;
  margin-right: auto;
}

.game-container, .conveyorBelt, .livingRoom, .book1.flashCardSky, .unscrambled-word, .b1u4a7, .b1u4a6 {
  position: relative;
  width: 1000px;
  height: 600px;
  font-family: "VNF-ComicSans", sans-serif;
}

/*
5 layers in game
*/
.fade-in {
  -webkit-animation: displayOnce 2s;
  /* Safari 4+ */
  -moz-animation: gdisplayOnce 2s;
  /* Fx 5+ */
  -o-animation: displayOnce 2s;
  /* Opera 12+ */
  animation: displayOnce 2s;
  /* IE 10+ */
}

@keyframes displayOnce {
  0% {
    opacity: 0;
    z-index: 8000;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    z-index: 0;
  }
}
@-webkit-keyframes displayOnce {
  0% {
    opacity: 0;
    z-index: 8000;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    z-index: 0;
  }
}
@font-face {
  font-family: 'Comic Neue';
  src: url("../assets/fonts/comicneue-bold.eot");
  src: url("../assets/fonts/comicneue-bold.eot?#iefix") format("embedded-opentype"), url("../assets/fonts/comicneue-bold.woff") format("woff"), url("../assets/fonts/comicneue-bold.ttf") format("truetype"), url("../assets/fonts/comicneue-bold.svg#comic_neuebold") format("svg");
  font-weight: bold;
  font-style: normal;
}
@font-face {
  font-family: 'Comic Neue';
  src: url("../assets/fonts/comicneue-regular.eot");
  src: url("../assets/fonts/comicneue-regular.eot?#iefix") format("embedded-opentype"), url("../assets/fonts/comicneue-regular.woff") format("woff"), url("../assets/fonts/comicneue-regular.ttf") format("truetype"), url("../assets/fonts/comicneue-regular.svg#comic_neueregular") format("svg");
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'VNF-ComicSans';
  src: url("../assets/fonts/VNF-Comic_Sans.eot");
  src: url("../assets/fonts/VNF-Comic_Sans.eot?#iefix") format("embedded-opentype"), url("../assets/fonts/VNF-Comic_Sans.woff") format("woff"), url("../assets/fonts/VNF-Comic_Sans.ttf") format("truetype"), url("../assets/fonts/VNF-Comic_Sans.svg#VNF-ComicSans") format("svg");
  font-weight: normal;
  font-style: normal;
}
/*****************
comic-b1u4a8
******************/
.comic-b1u4a8 .comic-image-img, .comic-b1u4a8 .comic-target-img {
  width: 190px;
  height: 190px;
}

/*****************
Conveyor belt
******************/
.conveyorBelt {
  background-image: url("../assets/book1/unit4/a3/conveyor-belt-bg.jpg");
  background-size: contain;
  overflow: hidden;
}

.firstLetterFlashcard.conveyorBeltScene {
  background-image: url("../assets/book1/unit4/a3/flashcards/first-letter-flash-card-bg.jpg");
  background-size: contain;
}

.conveyor-chip {
  height: 240px;
  position: absolute;
  bottom: 43px;
  right: 232px;
}

.conveyor-number-img {
  width: 104px;
  position: absolute;
}

.conveyor-number {
  position: absolute;
  color: #fff;
  font-size: 56px;
  cursor: pointer;
}

.conveyor-number-inner {
  position: relative;
  width: 104px;
  height: 99px;
}

.conveyor-number-1 {
  bottom: 157px;
  left: 170px;
}

.conveyor-number-2 {
  bottom: 157px;
  left: 285px;
}

.conveyor-number-3 {
  bottom: 157px;
  left: 405px;
}

.conveyor-number-4 {
  bottom: 157px;
  left: 518px;
}

.conveyor-number-5 {
  bottom: 318px;
  right: 365px;
}

.conveyor-number-6 {
  bottom: 345px;
  right: 250px;
}

.conveyor-number-7 {
  right: 130px;
  bottom: 369px;
}

.conveyor-number-8 {
  bottom: 457px;
  left: 138px;
}

.conveyor-number-9 {
  left: 350px;
  bottom: 438px;
}

.flashcard-img {
  width: 446px;
}

.conveyorBelt .glow-it {
  z-index: 2;
}

@-webkit-keyframes fly {
  0% {
    left: 0;
    top: -100px;
    -webkit-transform: scale(1);
  }
  100% {
    left: 200px;
    top: 110px;
    -webkit-transform: scale(2);
  }
}
@-moz-keyframes fly {
  0% {
    left: 0;
    top: -100px;
    -moz-transform: scale(1);
  }
  100% {
    left: 200px;
    top: 110px;
    -moz-transform: scale(2);
  }
}
@-o-keyframes fly {
  0% {
    left: 0;
    top: -100px;
    -o-transform: scale(1);
  }
  100% {
    left: 200px;
    top: 110px;
    -o-transform: scale(2);
  }
}
@keyframes fly {
  0% {
    left: 0;
    top: -100px;
    transform: scale(1);
  }
  100% {
    left: 200px;
    top: 110px;
    transform: scale(2);
  }
}
.balloon-fly {
  -webkit-animation: fly 3.5s infinite linear;
  /* Safari 4+ */
  -moz-animation: fly 3.5s infinite linear;
  /* Fx 5+ */
  -o-animation: fly 3.5s infinite linear;
  /* Opera 12+ */
  animation: fly 3.5s infinite linear;
  /* IE 10+ */
}

.balloon-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
}

.balloon-landed {
  left: 200px;
  top: 110px;
  /* width: 400px; */
  -webkit-transform: scale(2);
  -moz-transform: scale(2);
  -o-transform: scale(2);
  transform: scale(2);
}

.invisibility {
  visibility: hidden;
}

.img-marybeth {
  width: 100%;
}

.pointing-up-container {
  float: left;
}

.rope-container {
  top: -170px;
  width: 120px;
  position: absolute;
  left: 50%;
  overflow: hidden;
}

.pointing-up-container .up-arrow {
  float: left;
}

.up-arrow-img, .up-arrow-img-glow {
  width: 100px;
  position: absolute;
  top: -585px;
}

/*a7*/
.colorByNumbers-img {
  width: 550px;
}

.colorByNumbers-part-img {
  width: 550px;
}

/*s3*/
.livingRoom {
  background-image: url("../assets/book1/unit4/s3/living-room-bg.jpg");
}

.livingRoom-robot {
  position: relative;
  height: 240px;
  left: 500px;
  top: 300px;
  width: 240px;
}

.livingRoom-robot-chip {
  height: 240px;
}

.livingRoom-img {
  position: absolute;
  top: -80px;
  left: 50px;
}

.livingRoom-rainbow-overlay {
  position: absolute;
  width: 450px;
  height: 260px;
  top: 20px;
  left: 110px;
  z-index: 2;
  cursor: pointer;
}

.livingRoom-angled-img {
  width: 100px;
  position: absolute;
  left: 0px;
  cursor: pointer;
}

.livingRoom-angled-arrow {
  width: 100px;
  height: 66px;
  position: relative;
  top: 472px;
  left: 71px;
  transform: rotate(145deg);
  -ms-transform: rotate(145deg);
  -webkit-transform: rotate(145deg);
}

/*****************
Flash Card Sky
******************/
.book1.flashCardSky {
  background-image: url('../assets/book1/unit4/s10/flashcardsky-bw.jpg?1742470462');
}
.book1.flashCardSky .letterShow {
  z-index: 3;
}
.book1.flashCardSky .flash-card {
  position: absolute;
  height: 159px;
  width: 214px;
  cursor: pointer;
}
.book1.flashCardSky .flash-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
}
.book1.flashCardSky .card-glow-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1;
}
.book1.flashCardSky .card-glow-img.glow-it {
  z-index: 2;
}
.book1.flashCardSky .flash-card-cloud-1 {
  top: 40px;
  left: 350px;
}
.book1.flashCardSky .flash-card-cloud-2 {
  bottom: 39px;
  left: 378px;
  height: 138px;
  width: 188px;
}
.book1.flashCardSky .flash-card-cloud-orange {
  top: 78px;
  left: 46px;
  width: 271px;
  height: 201px;
}
.book1.flashCardSky .flash-card-cloud-pig {
  top: 104px;
  right: 154px;
  width: 246px;
  height: 181px;
}
.book1.flashCardSky .flash-card-cloud-pen {
  bottom: 85px;
  left: 97px;
  width: 204px;
  height: 152px;
}
.book1.flashCardSky .flash-card-cloud-quilt {
  bottom: 91px;
  right: 93px;
  height: 204px;
  width: 278px;
}
.book1.flashCardSky .flash-card-cloud-queen {
  top: 195px;
  left: 300px;
  height: 227px;
  width: 311px;
}
.book1.flashCardSky .flashCardSky-nav-panel {
  position: relative;
  height: 600px;
  width: 1000px;
}
.book1.flashCardSky .flashCardSky-nav-panel .arrows {
  margin-top: 250px;
}

.b1u4a8-1 {
  line-height: 550px;
  text-align: center;
  font-weight: bold;
  font-size: 20px;
}
.b1u4a8-1.colorByNumbers {
  line-height: 20px;
}
.b1u4a8-1 .tokens {
  line-height: 1.42857143;
  text-align: left;
  font-weight: normal;
  font-size: 20px;
}

.b1u4a8-1-4 {
  background: #39b54a;
  height: 550px;
}

/*****************
b1u4a9
******************/
.listening.b1u4a9 {
  background: url("../assets/common/backgrounds/abes-ears-background.jpg") no-repeat;
  overflow: hidden;
}
.listening.b1u4a9 .roundTitle {
  position: static;
  float: left;
  width: 140px;
  margin-right: 20px;
}

.b1u4a9 .pic-item {
  width: 82px;
  height: 60px;
  margin: 0 0 8px 8px;
  background: url("../assets/book1/unit4/a9/cloud-bg.png") no-repeat;
  line-height: 60px;
  text-align: center;
}
.b1u4a9 .pic-item-img {
  max-width: 80%;
  max-height: 80%;
}
.b1u4a9 .listeningbox {
  width: 820px;
  margin: 44px 0 0 12px;
}
.b1u4a9 .round-row {
  padding-left: 185px;
}
.b1u4a9 .play-again-dlg {
  top: 0;
}

/*****************
b1u4a6
******************/
.b1u4a6 {
  background: url("../assets/book1/unit4/a6/background.jpg") no-repeat;
  overflow: hidden;
}
.b1u4a6 .splatter {
  z-index: 1;
}
.b1u4a6 .drag-holder {
  width: 122px;
  height: 122px;
  position: absolute;
  cursor: pointer;
}
.b1u4a6 .drop-area {
  position: relative;
}
.b1u4a6 .drop-area.round-1 {
  top: 300px;
}
.b1u4a6 .drag-area {
  position: relative;
}
.b1u4a6 .drag-area.round-1 {
  top: 0;
}
.b1u4a6 .drop-holder {
  width: 110px;
  height: 110px;
  position: absolute;
}
.b1u4a6 .drop-holder-a {
  left: 35px;
  top: 150px;
}
.b1u4a6 .drop-holder-b {
  left: 118px;
  top: 55px;
}
.b1u4a6 .drop-holder-c {
  left: 226px;
  top: 102px;
}
.b1u4a6 .drop-holder-d {
  left: 358px;
  top: 112px;
}
.b1u4a6 .drop-holder-e {
  left: 488px;
  top: 98px;
}
.b1u4a6 .drop-holder-f {
  left: 596px;
  top: 78px;
}
.b1u4a6 .drop-holder-g {
  left: 692px;
  top: 114px;
}
.b1u4a6 .drop-holder-h {
  left: 804px;
  top: 50px;
}
.b1u4a6 .drop-holder-i {
  left: 926px;
  top: 0;
}
.b1u4a6 .drag-holder-a {
  left: 327px;
  top: 258px;
}
.b1u4a6 .drag-holder-b {
  left: 510px;
  top: 214px;
}
.b1u4a6 .drag-holder-c {
  left: 256px;
  top: 46px;
}
.b1u4a6 .drag-holder-d {
  left: 100px;
  top: 36px;
}
.b1u4a6 .drag-holder-e {
  left: 674px;
  top: 178px;
}
.b1u4a6 .drag-holder-f {
  left: 490px;
  top: 38px;
}
.b1u4a6 .drag-holder-g {
  left: 384px;
  top: 124px;
}
.b1u4a6 .drag-holder-h {
  left: 138px;
  top: 168px;
}
.b1u4a6 .drag-holder-i {
  left: 626px;
  top: 22px;
}
.b1u4a6 .drop-holder-j {
  left: 52px;
  top: 146px;
}
.b1u4a6 .drop-holder-k {
  left: 150px;
  top: 192px;
}
.b1u4a6 .drop-holder-l {
  left: 258px;
  top: 232px;
}
.b1u4a6 .drop-holder-m {
  left: 349px;
  top: 278px;
}
.b1u4a6 .drop-holder-n {
  left: 483px;
  top: 327px;
}
.b1u4a6 .drop-holder-o {
  left: 589px;
  top: 357px;
}
.b1u4a6 .drop-holder-p {
  left: 718px;
  top: 400px;
}
.b1u4a6 .drop-holder-q {
  left: 796px;
  top: 456px;
}
.b1u4a6 .drag-holder-j {
  left: 168px;
  top: 40px;
}
.b1u4a6 .drag-holder-k {
  left: 604px;
  top: 204px;
}
.b1u4a6 .drag-holder-l {
  left: 552px;
  top: 66px;
}
.b1u4a6 .drag-holder-m {
  left: 346px;
  top: 34px;
}
.b1u4a6 .drag-holder-n {
  left: 160px;
  top: 370px;
}
.b1u4a6 .drag-holder-o {
  left: 746px;
  top: 218px;
}
.b1u4a6 .drag-holder-p {
  left: 706px;
  top: 70px;
}
.b1u4a6 .drag-holder-q {
  left: 310px;
  top: 428px;
}
.b1u4a6 .drop-holder-img, .b1u4a6 .drag-holder-img {
  max-width: 100%;
  max-height: 100%;
}
.b1u4a6 .chip-animation {
  position: absolute;
  left: 812px;
  top: 96px;
  width: 141px;
  height: 141px;
}
.b1u4a6 .chip-animation.round-2 {
  left: 426px;
  top: 140px;
}
.b1u4a6 .chip-animation-img {
  width: 100%;
  position: absolute;
}
.b1u4a6 .round-complete {
  width: 1000px;
  height: 600px;
  background: url("../assets/book1/unit4/a6/background.jpg") no-repeat;
  position: relative;
  z-index: 10;
}
.b1u4a6 .round-complete-img {
  width: 100%;
  position: absolute;
}
.b1u4a6 .arrow-holder {
  position: relative;
  top: -50%;
  z-index: 11;
}
.b1u4a6 .arrow-right {
  margin-top: -66px;
  float: right;
  cursor: pointer;
  width: 110px;
}

.count-down {
  position: absolute;
  left: 52%;
  top: 524px;
  height: 60px;
  width: 150px;
  background-color: #f5f951;
  color: #000;
  font-size: 2em;
  text-align: center;
  border: #000 1px solid;
  -webkit-border-radius: 6px;
  -moz-border-radius: 6px;
  -ms-border-radius: 6px;
  -o-border-radius: 6px;
  border-radius: 6px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
  padding-top: 8px;
}

.glow-flapup {
  -webkit-animation: glow 1s infinite;
  /* Safari 4+ */
  -moz-animation: glow 1s infinite;
  /* Fx 5+ */
  -o-animation: glow 1s infinite;
  /* Opera 12+ */
  animation: glow 1s infinite;
  /* IE 10+ */
}

.glow-flapdown {
  -webkit-animation: inglow 1s infinite;
  /* Safari 4+ */
  -moz-animation: inglow 1s infinite;
  /* Fx 5+ */
  -o-animation: inglow 1s infinite;
  /* Opera 12+ */
  animation: inglow 1s infinite;
  /* IE 10+ */
}

.glow-flapup-slow {
  -webkit-animation: glow 2s infinite;
  /* Safari 4+ */
  -moz-animation: glow 2s infinite;
  /* Fx 5+ */
  -o-animation: glow 2s infinite;
  /* Opera 12+ */
  animation: glow 2s infinite;
  /* IE 10+ */
}

.glow-flapdown-slow {
  -webkit-animation: inglow 2s infinite;
  /* Safari 4+ */
  -moz-animation: inglow 2s infinite;
  /* Fx 5+ */
  -o-animation: inglow 2s infinite;
  /* Opera 12+ */
  animation: inglow 2s infinite;
  /* IE 10+ */
}

.b1u4s7 {
  background: url("../assets/book1/unit4/s7/background.jpg") no-repeat;
}
.b1u4s7 .number {
  width: 73px;
  height: 90px;
  position: relative;
}
.b1u4s7 .number-img {
  max-height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}
.b1u4s7 .balloon-container {
  width: 334px;
  overflow: hidden;
}
.b1u4s7 .balloon-img {
  width: 276px;
  margin: 22px 0 0 48px;
  position: relative;
}
.b1u4s7 .number {
  margin: 50px 30px 0 0;
  cursor: pointer;
}
.b1u4s7 .four {
  margin-right: 0;
}
.b1u4s7 .five {
  clear: both;
}
.b1u4s7 .eight {
  clear: both;
  margin-left: 68px;
}
.b1u4s7 .ten {
  width: 135px;
}

.unscrambled-word {
  background: url("../assets/book1/unit4/a5/background.jpg") no-repeat;
  text-align: center;
}
.unscrambled-word .tokens {
  text-align: left;
}
.unscrambled-word .bg-cloud {
  background: url("../assets/book1/unit4/a5/cloud.png") no-repeat center center;
  height: 100%;
}
.unscrambled-word .character-container {
  display: inline-block;
  margin-top: 208px;
  background: #3ED2FF;
  padding: 5px;
  border-radius: 10px;
}
.unscrambled-word .character-container .character-holder {
  margin-right: 5px;
  border-bottom: 5px solid;
}
.unscrambled-word .character-holder {
  display: inline-block;
}
.unscrambled-word .character {
  font-weight: bold;
  font-size: 5.5em;
  letter-spacing: 5px;
  cursor: pointer;
  width: 60px;
  height: 92px;
  line-height: 1;
  overflow: hidden;
  margin-bottom: 5px;
}
.unscrambled-word .count-down {
  left: 42%;
  background-color: #f5f951;
  color: #000;
  border-color: #000;
  top: 500px;
}
.unscrambled-word .tokenContainer {
  margin-top: 20px;
  margin-left: 860px;
}
.unscrambled-word .playAgain {
  top: 27.5px;
}
.unscrambled-word .character-source {
  position: relative;
  top: 210px;
}

.float-up {
  position: relative;
  -webkit-animation: floatBubble 2s infinite normal ease-out;
  animation: floatBubble 2s infinite normal ease-out;
}

@-webkit-keyframes floatBubble {
  0% {
    top: 500px;
  }
  100% {
    top: 0px;
  }
}
@keyframes floatBubble {
  0% {
    top: 500px;
  }
  100% {
    top: 0px;
  }
}
.b1u4s4 .letsPlayMouse {
  position: relative;
  left: 244px;
  top: 138px;
  width: 250px;
  height: 300px;
  display: block;
  top: 0;
}
.b1u4s4 .mouse-img {
  position: absolute;
  top: 0;
  width: 100%;
}
.b1u4s4 .lets-learn {
  position: relative;
  left: 468px;
  top: 50px;
  width: 172px;
  height: 124px;
  display: block;
}
.b1u4s4 .lets-learn-img {
  position: absolute;
  top: 0;
  width: 100%;
}
.b1u4s4 .tickMouse {
  position: absolute;
  top: 14%;
  left: 360px;
  width: 70px;
}
.b1u4s4 .tickSpeech {
  position: absolute;
  top: 6%;
  left: 585px;
  width: 70px;
}

.b1u4s4.letsPlay {
  background: url("../assets/book1/unit4/s4/background.jpg") no-repeat;
}

@keyframes fly-step1 {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@-webkit-keyframes fly-step1 {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes fly-step2 {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@-webkit-keyframes fly-step2 {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@keyframes fly-step3 {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes fly-step3 {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
.b1u4s6 {
  background: url("../assets/book1/unit4/s6/background.jpg") no-repeat;
  overflow: hidden;
}
.b1u4s6 .balloon-img {
  height: 470px;
  margin: 25px 0 0 105px;
}
.b1u4s6 .lets-learn-img {
  width: 220px;
  margin: 118px 0 0 90px;
}
.b1u4s6 .flying-bird-container {
  width: 135px;
  position: relative;
  margin: 262px 0 0 -50px;
}
.b1u4s6 .flying-bird-img {
  position: absolute;
  top: 0;
  width: 100%;
}
.b1u4s6 .step-1 {
  -webkit-animation: fly-step1 1s infinite normal ease-out;
  animation: fly-step1 1s infinite normal ease-out;
}
.b1u4s6 .step-2 {
  -webkit-animation: fly-step2 1s infinite normal ease-out;
  animation: fly-step2 1s infinite normal ease-out;
}
.b1u4s6 .step-3 {
  -webkit-animation: fly-step3 1s infinite normal ease-out;
  animation: fly-step3 1s infinite normal ease-out;
}

.b1u4s11 {
  background: url("../assets/book1/unit4/s11/background.jpg") no-repeat;
  overflow: hidden;
}
.b1u4s11 .balloon-container {
  width: 346px;
}
.b1u4s11 .hot-air-balloon-img {
  height: 468px;
  width: 276px;
  margin: 24px 0 0 70px;
}
.b1u4s11 .trick {
  position: relative;
  margin-top: 80px;
}
.b1u4s11 .trick .glow-container {
  top: -76px;
  left: 260px;
}
.b1u4s11 .gin {
  position: relative;
}
.b1u4s11 .gin .glow-container {
  top: -76px;
  left: 110px;
}
.b1u4s11 .abe {
  position: relative;
}
.b1u4s11 .abe .glow-container {
  top: -122px;
  left: 458px;
}
.b1u4s11 .trick-img {
  height: 144px;
  margin-left: 324px;
}
.b1u4s11 .gin-img {
  height: 168px;
  margin-left: 110px;
}
.b1u4s11 .abe-img {
  height: 142px;
  margin-left: 360px;
  margin-top: -18px;
}
.b1u4s11 .completed {
  -webkit-transition: margin-left 2s linear;
  transition: margin-left 2s linear;
}
.b1u4s11 .planes-container {
  width: 654px;
}
.b1u4s11 .fly-right {
  margin-left: 1000px;
}
.b1u4s11 .fly-left {
  margin-left: -1000px;
}
.b1u4s11 .glow-container {
  position: absolute;
  height: 108px;
  width: 142px;
}
.b1u4s11 .glow-inner {
  position: relative;
  cursor: pointer;
  height: 108px;
  width: 142px;
}
.b1u4s11 .glow-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.visibility-hidden {
  visibility: hidden;
}

/*****************
 CARD MATCHING
 ****************/
.b1u4a2a {
  background: url('../assets/common/backgrounds/beach-scene.jpg?1742470474');
}

/****************
MID TERM TEST
*****************/
.b1t1a3, .b1t2a2 {
  background: url('../assets/common/backgrounds/dark-leaves.jpg?1742470474');
}

 /*****************
WORD SEARCH
******************/
.b1u4a7 {
  background: url("../assets/book1/wordSearch/b1u4a7/b1u4a7-wordSearch-background.jpg");
}

/*****************
LETTER FALL MATCH
******************/
.b1u4a6 {
  background: url("../assets/book1/unit4/letter-fall-matching/b1u4a6/b1u4a6-letter-fall-matching-background.jpg");
}