.container {
    position: relative;
}
.exercise_container {
    width: 100%;
    max-width: 1290px;
    /*height: 600px;*/
    min-height: 80vh;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    background-image: url('../img/material/exercise_bg.jpg');
}
.question_container {
    width: 80%;
    margin: 0 auto;
    margin-top: 48px;
    display: table;
    vertical-align: middle;
    flex: 3;
}
@media (max-width: 767px) {
  .question_container {
      margin-top: 60px;
  }
}
#retry_answer{
    color: black;
    background-color: #fff;
}
.question {
    width: 100%;
	font-size: 24px;
	font-weight: bold;
	text-align: center;
	display: table-cell;
	vertical-align: middle;

}
.answer_container {
    width: 80%;
    margin: 0 auto;
    padding-top: 20px;
    font-size: 20px;
	text-align: center;
	text-decoration-skip-ink: none;
	display: flex;
    flex-wrap: wrap;
	justify-content: center;
	vertical-align: middle;
	flex: 5;
}
.instruction_button {
    width: 120px;
    height: 30px;
    line-height: 30px;
    padding-top: 2px;
    text-align: center;
    text-decoration: none;
    font-family: Verdana, Arial;
    font-size: 16px;
    font-weight: 600;
    color: #fc7420;
    background-color: #ffffffbb;
    border: 0px;
    border-radius: 6px;
    cursor: pointer;
    display: block;
}
.instruction_button:hover {
    background-color: #aaaaaabb;
}
.button_container {
    flex: 2;
}
.active {
    /*border: 3px #000 solid !important;*/
    color: #fc7420;
}
.submit {
    margin-top: 30px;
    vertical-align: middle;
    text-align: center;
    display: block;
}
#retry_btn, #next_btn {
    display: none;
    margin-top: 60px;
}
#retry_btn, #next_btn, #submit_btn, #start_btn, #navigation_modal_btn {
    width: 150px;
    height: 44px;
    background-color: #fc7420;
    color: #fff;
    border: 0;
    border-radius: 8px;
}
#retry_btn {
    background-color: #fc7420;
}
#retry_btn:hover, #submit_btn:hover {
    background-color: #dc5420;
}
#next_btn {
    background-color: #6e9e3e;
}
#next_btn:hover {
    background-color: #4e7e1e;
}
#correct {
    width: auto;
    padding-left: 60px;
    padding-right: 60px;
    min-height: 48px;
    margin-bottom: 20px;
    padding: 12px;
    border-radius: 12px;
    /*background-color: #5e8e2e;*/
    display: none;
}
#incorrect {
    width: auto;
    padding-left: 60px;
    padding-right: 60px;
    min-height: 48px;
    margin-bottom: 20px;
    padding:12px;
    border-radius: 12px;
    /*background-color:  rgb(189, 69, 36);*/
    display: none;
}
.img-thumbnail{
    background-color:transparent;
    border:none;
    width: 200px;
    height: 200px;
}

.spanner{
    position:absolute;
    top: 50%;
    left: 0;
    /*background: #2a2a2a;*/
    width: 100%;
    display:block;
    text-align:center;
    height: 300px;
    color: #FFF;
    transform: translateY(-50%);
    z-index: 1801;
    visibility: hidden;
}
.overlay{
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1800;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    visibility: hidden;
}

.loader,
.loader:before,
.loader:after {
    border-radius: 50%;
    width: 2.5em;
    height: 2.5em;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    -webkit-animation: load7 1.8s infinite ease-in-out;
    animation: load7 1.8s infinite ease-in-out;
}
.loader {
    color: #ffffff;
    font-size: 10px;
    margin: 80px auto;
    position: relative;
    text-indent: -9999em;
    -webkit-transform: translateZ(0);
    -ms-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-animation-delay: -0.16s;
    animation-delay: -0.16s;
}
.loader:before,
.loader:after {
    content: '';
    position: absolute;
    top: 0;
}
.loader:before {
    left: -3.5em;
    -webkit-animation-delay: -0.32s;
    animation-delay: -0.32s;
}
.loader:after {
    left: 3.5em;
}
@-webkit-keyframes load7 {
    0%, 80%, 100% {
        box-shadow: 0 2.5em 0 -1.3em;
    }
    40% {
        box-shadow: 0 2.5em 0 0;
    }
}
@keyframes load7 {
    0%, 80%, 100% {
        box-shadow: 0 2.5em 0 -1.3em;
    }
    40% {
        box-shadow: 0 2.5em 0 0;
    }
}
.show{
    visibility: visible;
}
.spanner, .overlay{
    opacity: 0;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    transition: all 0.3s;
}
.spanner.show, .overlay.show {
    opacity: 1
}
.info_button_container {
    position: absolute;
    top: 90px;
    left: 30px;
    z-index: 1010;
}
.info_progress_container {
    width: 220px;
    position: absolute;
    top: 77px;
    right: 10px;
    margin-right: 22px;
    z-index: 1010;
    display: none;
}
.info_progress_container img {
    width: 100%;
}
.info_progress_container span {
    width: 100%;
    height: 100%;
    text-align: center;
    font-size: 14px;
    font-weight: 400;
    position: absolute;
    left: 0;
    top: 0;
    margin-top: 4px;
    padding: 12px;
}
.info_button {
    display: inline-block;
    width: 32px;
	height: 32px;
	border-radius: 22px;
	background-color: rgb(252, 116, 32);
}
.info_button i {
    color: #FFFF
}
.info_button:active {
	background-color: yellow;
}
.info_button button {
    border: 0;
    margin-left: 0;
    background: none;
    font-size: 24px;
}
.toast-close {
    position: absolute;
    right: 0;
    margin-right: 8px;
}
.tutorial_container {
    position: absolute;
    left: 0;
    top: 0;
    min-width: 100vw;
    min-height: 100%;
    z-index: 200000;
    display: none;
}
.tutorial_pic {
    width: 160px;
}
.tutorial_pic_small {
    width: 90px;
}
#phone_btn {
    width: 60px;
    height: 60px;
    margin-left: calc(50% - 30px);
    background-image: url('../img/material/phone_call_button.png');
    background-size: 100%;
    cursor: pointer;
}
#phone_btn:hover {
    background-image: url('../img/material/phone_call_button_hover.png');
}