html,
body {
    background: #000;
    margin: 0px;
    padding: 0px;
    height: 720px;
    font-family: arial;
    font-size: 20px;
}

div {
    box-sizing: border-box;
}

.textcenter {
    text-align: center;
}

.container {
    width: 1280px;
    margin: 0 auto;
    background: #263583;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding-bottom: 10px;
    position: relative;
    height: 720px;
    -webkit-border-top-right-radius: 100px;
    -moz-border-radius-topright: 100px;
    border-top-right-radius: 100px;

    padding: 10px;
    -webkit-box-shadow: inset -6px 4px 5px 3px rgba(214, 187, 212, 0.75);
    -moz-box-shadow: inset -6px 4px 5px 3px rgba(214, 187, 212, 0.75);
    box-shadow: inset -6px 4px 5px 3px rgba(214, 187, 212, 0.75);
    -webkit-box-shadow: inset -6px 4px 5px 3px rgba(14, 14, 14, 0.75);
    -moz-box-shadow: inset -6px 4px 5px 3px rgba(214, 187, 212, 0.75);
    box-shadow: inset -6px 4px 5px 3px rgba(14, 14, 14, 0.75);
    border: 10px solid rgb(4, 14, 66);
}

.container-border {
    -webkit-border-top-right-radius: 95px;
    -moz-border-radius-topright: 95px;
    border-top-right-radius: 95px;
    border: 10px solid rgb(49, 64, 152);
}


.mainheading {
    border-radius: 2px;
    /* width: 90%; */
    color: #FFF;
    font-size: 26px;
    background: #1e2d6a;
    font-weight: bold;
    /* margin-left: 7%; */
    /* text-indent: 30px; */
    position: absolute;
    padding: 8px 37px;
    left: 1px;
    top: 7px;
    /* padding: 2px 0; */
    -webkit-box-shadow: 2px 2px 4px 4px #0b112f;
    box-shadow: 2px 2px 4px 4px #0b112f;
    display: inline-block;
    z-index: 10;
}

.col-1-10 {
    width: 10%;
    float: left;
}

.col-9 {
    width: 90%;
    float: left;
}

.smsqbtn {
    width: 40px;
    height: 40px;
    background: red;
    border: 3px solid #FFF;
    font-size: 25px;
    color: #FFF;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
}

.smsqbtn:hover {
    color: #000;
}

.col-4 {
    width: 25%;
    position: relative;
    box-sizing: border-box;
}

.container:after,
.container-fluid:after,
.row:after,
.clear-fix {
    clear: both;
}

.left_menu {
    background: #1e2d6a;
    -webkit-box-shadow: 2px 2px 4px 4px #121b4c;
    box-shadow: 2px 2px 4px 4px #0e1435;
    float: left;
    width: 242px;
    height: 630px;
    margin: 38px 0 0 -17px;
    padding: 10px 11px;
}

.clear-fix {
    clear: both;
}

.left_menu ul {
    margin: 0;
    padding: 0;
    list-style: none;
    color: #FFF;
    font-family: Arial;
}

.left_menu ul li {
    margin-bottom: 30px;
    position: relative;
}

.left_menu ul li a {
    color: #FFF;
    text-decoration: none;
    font-size: 23px;
    height: 49px;
    display: block;
    line-height: 49px;
    padding-left: 69px;
}

.left_menu ul li a.what {
    background: url(../images/what.png) no-repeat;
}

.left_menu ul li a.structure {
    background: url(../images/structure.png) no-repeat;
}

.left_menu ul li a.example {
    background: url(../images/example.png) no-repeat;
}

.left_menu ul li a.graphic {
    background: url(../images/graphic.png) no-repeat;
}

.left_menu ul li a.scaffold {
    background: url(../images/scaffold.png) no-repeat;
}

.left_menu ul li a.revision {
    background: url(../images/revision.png) no-repeat;
}

.left_menu ul li a.activity {
    background: url(../images/activity.png) no-repeat;
}

.white_box {
    background: #FFF;
    border-radius: 10px;
    padding: 10px;
}

.left_menu ul li a.hv:hover {
    background-color: rgba(255, 255, 255, 0.18) !important;
}

.right_content {
    position: absolute;
    width: 1177px;
    right: 0px;
    background: #d0d4e5;
    top: 9px;
    height: 680px;
    box-sizing: border-box;
    -webkit-border-top-right-radius: 80px;
    -moz-border-radius-topright: 80px;
    border-top-right-radius: 80px;
    padding: 10px;
}

.rcontent {
    width: 100%;
    height: 100%;
    -webkit-border-top-right-radius: 75px;
    -moz-border-radius-topright: 75px;
    border-top-right-radius: 75px;
    border: 0px solid rgb(241, 141, 182);
    padding: 54px 10px 10px 10px;
    box-sizing: border-box;
}

.rcontent_heading {
    font-family: arial;
    background: #f8f4f3;
    color: #000;
    font-size: 30px;
    padding: 5px 10px;
    border-radius: 10px;
    font-weight: bold;
}

.text_bg {
    background: #e8eaf2;
    width: 98%;
    margin: 0 auto;
    box-sizing: border-box;
    font-size: 20px;
    font-family: arial;
    padding: 10px;
    border-radius: 10px;
}

.col-13 {
    width: 80%;
    float: left;
}

.black_border_box {
    border: 1px solid #000;
    padding: 7px;
    margin-bottom: 5px;
    overflow: hidden;
    font-size: 26px;
    background: #FFF;
}

.black_border_box1 {
    border: 1px solid #000;
    padding: 7px;
    margin-bottom: 5px;
    overflow: hidden;
    font-size: 17px;
    background: #FFF;
}

.btnborder {
    width: 100%;
    padding: 15px 10px;
    color: #000;
    border: 5px solid #FFF;
    display: inline-block;
    background: red;
    box-sizing: border-box;
    font-size: 14px;
    cursor: pointer;
    margin-bottom: 10px;
}

.back-div span {
    display: inline-block;
    padding: 5px;
    background-color: transparent;
}

/* common use */

a.book-next {
    width: 35px;
    height: 34px;
    background: url(../images/book-next.png) center no-repeat;
    display: block;
    margin: 0 auto;
}

a.book-next:hover {
    background: url(../images/book-next-h.png) center no-repeat;
}

a.book-prev {
    width: 35px;
    height: 34px;
    background: url(../images/book-prev.png) center no-repeat;
    display: block;
    margin: 0 auto;
    display: none;
}

a.book-prev:hover {
    background: url(../images/book-prev-h.png) center no-repeat;
}


a.a-book-next {
    width: 52px;
    height: 52px;
    background: url(../images/a-book-next.png) center no-repeat;
    display: inline-block;
    margin: 0 auto;
}

a.a-book-next:hover {
    background: url(../images/a-book-next-h.png) center no-repeat;
}

a.a-book-prev {
    width: 52px;
    height: 51px;
    background: url(../images/a-book-prev.png) center no-repeat;
    display: inline-block;
    margin: 0 auto;
}

a.a-book-prev:hover {
    background: url(../images/a-book-prev-h.png) center no-repeat;
}


.col-3 {
    width: 33.333333%;
    float: left;
    padding-right: 15px;
    padding-left: 15px;
}

input[type="text"] {
    font-size: 18px;
    border: 1px solid #000;
    width: 100%;
}

.smalltext {
    font-size: 16px;
}

.normaltext {
    font-size: 18px;
}

.col-2 {
    width: 50%;
    float: left;
    padding-right: 15px;
    padding-left: 15px;
}

textarea {
    width: 100%;
    font-size: 20px;
    border: 1px solid #000;
    margin-top: 5px;
    box-sizing: border-box;
}

.col-1-3 {
    width: 75%;
    float: left;
    padding-right: 15px;
    padding-left: 15px;
}

.roundbox {
    border: 4px solid #FFF;
    border-radius: 10px;
    color: #FFF;
    padding: 10px;
}

.scroll_div {
    overflow-y: scroll;
    background: #FFF;
    padding: 10px;
    height: 430px;
}

.hideborderdiv {
    border: 1px solid #000;
}

.hideborderdiv img {
    border: 4px solid #FFF;
}

.left {
    float: left;
}

.right {
    float: right;
}

/* common use */

a.anchor2 {
    text-decoration: none;
    display: inline-block;
    background: #0099cc;
    color: #000;
    border: 3px solid #FFF;
    border-radius: 10px;
    padding: 10px 15px;
    font-weight: bold;
    margin: 0 auto;
    text-align: center;
}

a.anchor2:hover {
    color: #FFF;
}

.showborder {
    border: 1px solid #000;
    background: #ede7e3;
    float: left;
}

.showborder img {
    margin-bottom: -5px;
}

.col-1-2 {
    width: 50%;
    float: left;
}

.col-5 {
    width: 20%;
    float: left;
    padding-right: 15px;
    padding-left: 15px;
    min-height: 1px;
}

.col-1-4 {
    width: 25%;
    float: left;
    padding-right: 15px;
    padding-left: 15px;
}

.purposebox {
    width: 90%;
    padding: 10px;
    background: #FFF;
    border: 6px solid #960a0a;
    position: relative;
}

.purposebox ul {
    margin: 0;
}

.drag-me-away {
    position: absolute;
    width: 100%;
    height: 100%;
    background: orange;
    top: -7px;
    left: -7px;
    box-sizing: content-box;
    border: 7px solid #FFF;
    color: #FFF;
    font-size: 30px;
    line-height: 400%;
    text-align: center;
    cursor: pointer;
}

a.next {
    position: absolute;
    display: block;
    background: url(../images/next.png);
    width: 61px;
    height: 61px;
    right: 15px;
    bottom: 15px;
}

a.next:hover {
    background: url(../images/nexthover.png) no-repeat;
}

a.prev {
    position: absolute;
    display: block;
    background: url(../images/prev.png) no-repeat;
    width: 61px;
    height: 61px;
    left: 15px;
    bottom: 15px;
}

a.prev:hover {
    background: url(../images/prevhover.png) no-repeat;
}

.wrongright {
    color: #FFF;
    border: 5px solid #FFF;
    padding: 20px 0;
    cursor: pointer;
    font-size: 18px;
    padding: 10px;
}

.wrongright-hover:hover {
    border: 5px solid #bfbfbf;
}

.wrongsign {
    color: #990000;
    font-weight: bold;
    font-size: 60px;
}

.rightsign {
    color: #0e9e0e;
    font-weight: bold;
    font-size: 60px;
}

.show {
    visibility: hidden;
}

.stbrown {
    background: #993333;
    color: #FFF;
    border: 3px solid #FFF;
    padding: 15px 20px;
    font-weight: 100;
}

.in-line-b {
    display: inline-block;
    width: auto;
}

.border-box {
    border: 7px solid;
    border-color: orange;
    width: 100%;
    background: #FFF;
}

.respimg {
    max-width: 100%;
    margin: -16px auto;
    display: block;
    /*! height: auto; */
}

a.tglspanbtn {
    text-decoration: none;
    display: inline-block;
    background: #0099cc;
    color: #000;
    border: 3px solid #FFF;
    border-radius: 10px;
    padding: 10px 15px;
    font-weight: bold;
    margin: 0 auto;
    text-align: center;
}

a.tglspanbtn:hover {
    color: #FFF;
}

.blueborderbtn {
    text-decoration: none;
    display: inline-block;
    background: #0099cc;
    color: #FFF;
    border: 3px solid #FFF;
    border-radius: 5px;
    padding: 7px 10px;
    font-size: 14px;
    cursor: default;
}

.lng_tab {
    display: inline-block;
    width: 100%;
    font-size: 14px;
    border: 1px solid #000;
    background: red;
    padding: 7px;
    margin-bottom: 3px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

.lng_tab:hover {
    border: 3px solid;
}

.lng_tab1 {
    display: inline-block;
    width: 100%;
    font-size: 14px;
    border: 1px solid #000;
    background: red;
    padding: 7px;
    margin-bottom: 6.5px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

.lng_tab1:hover {
    border: 3px solid;
}

a.hint {
    width: 35px;
    height: 35px;
    display: block;
    background: url(../images/hint.png);
    margin: 5px 0;
    position: relative;
    text-decoration: none;
    color: #000;
    font-size: 14px;
}

a.hint:hover {
    background: url(../images/hint-hover.png);
}

.hint span {
    display: block;
    width: 250px;
    background: #ffffcd;
    border: 1px solid;
    border-radius: 5px;
    padding: 5px;
    position: absolute;
    left: -470px;
    top: 0;
    display: none;
}

a.hint:hover>span {
    display: block;
}

a.pdf {
    width: 39px;
    height: 40px;
    background: url(../images/pdf.png);
    display: inline-block;
    text-decoration: none;
    font-size: 14px;
    text-decoration: none;
    color: #000;
    position: relative;
}

a.pdf>span {
    position: absolute;
    top: 14px;
    display: inline-block;
    width: 100px;
    left: 45px;
    display: none;
}

a.pdf:hover>span {
    display: block;
}

.activity_box {
    background: #FFF;
    border: 5px solid #f0e43e;
    height: 550px;
    border-radius: 20px;
    padding: 10px;
    width: 93%;
    margin: 0 auto;
}

.activity_heading {
    color: #334e6b;
    font-weight: bold;
    font-size: 18px;
    border: 5px solid #e8c32d;
    padding: 15px 25px;
    border-radius: 10px;
}

.drop_wrap {
    border-radius: 15px;
    border: 4px solid #a01324;
    width: 100%;
    padding: 10px 20px;
}

.drop_wrap span {
    margin: 0 15px;
    display: inline-block;
    cursor: pointer;
}

.counter {
    border-radius: 15px;
    border: 4px solid #a01324;
    display: inline-block;
    padding: 2px 15px;
}

.activity_text {
    color: #2b4666;
    font-weight: bold;
}

a.activity-next {
    position: absolute;
    display: block;
    background: url(../images/activity-next.png);
    width: 67px;
    height: 67px;
    right: 24px;
    bottom: 44px;
}

a.activity-next:hover {
    background: url(../images/activity-next-h.png) no-repeat;
}

a.activity-prev {
    position: absolute;
    display: block;
    background: url(../images/activity-prev.png) no-repeat;
    width: 67px;
    height: 67px;
    left: 29px;
    bottom: 44px;
}

a.activity-prev:hover {
    background: url(../images/activity-prev-h.png) no-repeat;
}

.activity-dg-box {
    border: 3px solid #8d0a0c;
    padding: 15px 30px;
    background: #FFF;
    border-radius: 15px;
    position: relative;
}

.drag-me-activity {
    position: absolute;
    width: 100%;
    height: 100%;
    background: #0099cb;
    top: -7px;
    left: -7px;
    box-sizing: content-box;
    border: 4px solid #000;
    color: #FFF;
    font-size: 25px;
    font-weight: bold;
    cursor: pointer;
    border-radius: 15px;
    padding: 10px;
}

.drop-container span {}

.result {
    -webkit-box-shadow: 0px -1px 30px 0px rgba(79, 79, 79, 0.92);
    -moz-box-shadow: 0px -1px 30px 0px rgba(79, 79, 79, 0.92);
    box-shadow: 0px -1px 30px 0px rgba(79, 79, 79, 0.92);
    width: 40%;
    padding: 10px 30px;
    border: 4px solid #e8c32d;
    position: absolute;
    top: -100px;
    background: #FFF;
    left: 30%;
    border-radius: 30px;
    font-size: 30px;
    line-height: 50px;
}

.result a {
    border: 4px solid #dc0033;
    display: block;
    float: right;
    font-size: 20px;
    text-decoration: none;
    padding: 10px 20px;
    line-height: 20px;
    border-radius: 15px;
    color: #000;
}

.result a:hover {
    border: 4px solid #8f1116;
}

@media (min-width: 992px) {
    .col-4 {
        float: left;
    }
}

@media screen and (max-width: 780px) {
    .container {

        box-sizing: border-box;
        padding: 10px;
        background: #030;
    }
}

.b-wrap {
    padding: 0px !important;
    width: 358px !important;
    height: 438px !important;
}

.nom {
    margin: 0;
}

.w_div {
    width: 126px;
    height: 49px;
    position: absolute;
    overflow: hidden;
    outline: none;
    font-size: 17px;
}

.activity_heading {
    color: #000;
    font-weight: 100;
    font-size: 24px;
    border: 3px solid #1d5fad;
    padding: 15px 25px;
    border-radius: 10px;
    background: #e3e6a9;
    width: 60%;
    margin: 0 auto;
}

.act-drop {
    float: left;
    background: #b1b1b1;
    margin-left: 10px;
    width: 180px;
    height: 50px;
    border-radius: 5px;
    margin-bottom: 10px;
    margin-left: 36px;
    position: relative;
}

.draggablebox {
    border: 4px solid #000;
    padding: 20px;
    border-radius: 15px;
    position: absolute;
    width: 240px;

    background: #FFF;
    right: -12px;
    top: -21px;
}

.smalldrag1 {
    border: 3px solid #d2e6a8;
    width: 200px;
    height: 50px;
    font-size: 20px;
    border-radius: 10px;
    font-weight: bold;
    text-align: center;
    line-height: 45px;
    cursor: pointer;
    margin-bottom: 10px;
    -webkit-box-shadow: 2px 2px 10px 2px #828282;
    box-shadow: 2px 2px 10px 2px #828282;
    background: #FFF;
}

.abs {
    position: absolute;
    top: 0;
    left: 0;
}

.resbox {
    background: #d2f0fd;
    margin: 0 auto;
    border: 4px solid #ab1623;
    padding: 50px;
    width: 50%;
    border-radius: 20px;
    font-size: 30px;
}

a.nexts {
    position: absolute;
    display: block;
    background: url(../images/nexts.png);
    width: 61px;
    height: 61px;
    right: 15px;
    bottom: 15px;
}

a.nexts:hover {
    background: url(../images/nextsh.png) no-repeat;
}

.close {
    width: 50px;
    height: 51px;
    background: url(../images/close.png);
    display: block;
    margin-top: 5px;
    margin-left: 50px;
}

.draggableRow {
    position: absolute;
    top: 11px;
    left: 891px;
}

.dropZoneStyle {
    border: 3px solid #d2e6a8;
    width: 200px;
    height: 50px;
    font-size: 20px;
    border-radius: 10px;
    font-weight: bold;
    text-align: center;
    line-height: 45px;
    cursor: pointer;
    margin-bottom: 10px;
    -webkit-box-shadow: 2px 2px 10px 2px #828282;
    box-shadow: 2px 2px 10px 2px #828282;
    background: #FFF;
}

.section-done::after {
    content: "\2713";
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #d9fd9b;
    top: 0;
    left: -10px;
    color: #008011;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bolder;
}