@media (max-width: 600px) {
    #nav-bar {
        margin-top: 40px;
        margin-bottom: 10px;
        text-align: center;
    }
    .center {
        text-align: center;
    }
    .button {
        font-size: 14px;
        display: inline-block;
        background: #fff;
        position: relative;
        height: 42px;
        font-weight: 200;
        width: 140px;
        box-sizing: border-box;
        border: 1px solid rgba(0, 0, 0, 0.16);
        box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.2);
        line-height: 42px;
        padding-left: 8px;
        padding-right: 10px;
        background-position: center right;
        background-repeat: no-repeat;
        cursor: pointer;
        text-align: center;
        white-space: nowrap;
        background-color: #fafafa;
        background-image: linear-gradient(#FFF, #F6F6F6);
        background: #FFF;
        background: linear-gradient(#FFF, #F6F6F6);
        border: 1px solid rgba(0, 0, 0, 0.18);
        color: #292920;
    }
    .button.disabled {
        background: #bfbfb8;
        border-bottom: 3px solid #bfbfb8;
        pointer-events: none;
    }

    #container:not(.front-page-visible) .front-page, #container:not(.question-page-visible) .question-page, #container:not(.results-page-visible) .results-page {
        display: none;
    }

    .front-scroller {
        position: relative;
        height: 38.4vw;
        background: url(../assets/front-page-mobile.png);
        background-repeat: no-repeat;
        background-size: 100%;
    }

    .front-description {
        position: relative;
        font-size: 16px;
        line-height: 28px;
        padding: 24px;
    }

    .begin-button.button, .continue-button.button, .reset-button.button {
        width: calc(100% - 48px);
        position: relative;
        height: 56px;
        line-height: 56px;
        font-size: 18px;
        color: #797979;
        margin: 24px;
        margin-top: 16px;
    }

    .question-title {
        text-align: center;
        font-weight: 700;
        position: relative;
        width: 100%;
        padding: 18px 32px 18px;
        font-size: 14px;
        box-sizing: border-box;
    }

    .question-progress {
        position: absolute;
        top: 249px;
        left: 32px;
        font-size: 16px;
        color: rgb(136,136,136);
    }

    .question-image {
        width: 100%;
        height: 40.9vw;
        background: url(../assets/eye-images/1.jpg);
        background-repeat: no-repeat;
        position: relative;
        left: 0px;
        background-size: 100%;
    }

    .question-buttons {
        position: relative;
        top: 0px;
        width: 100%;
        left: 0px;
        padding: 24px 9px;
        padding-bottom: 56px;
        box-sizing: border-box;
    }

    .question-buttons > .question-button {width: calc(50% - 5px);height: 90px;display: inline-block;text-align: center;font-size: 18px;color: white;background: rgb(125, 150, 194);margin-bottom: 10px;line-height: 90px;cursor: pointer;position: static;font-weight: 700;}

    .question-buttons > .question-button:nth-child(2n) {
        margin-left: 10px;
    }

    .continue-button.button {
    }

    .question-buttons > .question-button:hover {background: #00446b;}

    .question-buttons:not(.locked) ~ .continue-button.button {
        pointer-events: none;
        opacity: 0.5;
        box-shadow: none;
        background: #fff;
    }

    .button:hover {
        background: #f1f1f1;
    }

    .question-buttons.locked {
        pointer-events: none;
    }

    .results-title {
        position: static;
        font-size: 24px;
        padding: 36px;
    }

    .results-description {
        font-size: 16px;
        position: static;
        line-height: 24px;
        padding: 0px 36px 36px;
    }

    .results-block {
        width: 100%;
        height: 135px;
        background: rgb(0, 68, 106);
        position: static;
        top: 144px;
        left: 149px;
        color: white;
        box-sizing: border-box;
        padding: 16px 36px;
    }

    .results-block-title {
        font-size: 19px;
        padding: 19px 0px 5px;
    }

    .results-block-value {
        font-size: 44px;
        font-weight: 700;
        padding-top: 2px;
        line-height: 44px;
    }

    .question-button.mark-correct {
        background: rgb(0, 147, 15) !important;
    }
    .question-button.mark-incorrect {
        background: rgb(177, 0, 33) !important;
    }

    .question-button.selected.mark-correct:before, .question-button.selected.mark-incorrect:before {
        content: "Correct";
        position: absolute;
        left: 50%;
        color: rgb(0, 147, 15);
        font-size: 24px;
        font-weight: 700;
        top: 223px;
        line-height: 64px;
        background: url(../assets/tick-mobile.png);
        padding-left: 29px;
        background-repeat: no-repeat;
        background-position: 0px center;
        transform: translate(-50%);
        background-size: 23px;
    }

    .question-button.selected.mark-incorrect:before {
        content: "Incorrect";
        padding-left: 21px;
        color: rgb(177, 0, 33);
        padding-bottom: 1px;
        background-image: url(../assets/cross-mobile.png);
        background-size: 16px;
    }

    .question-page[current-question="35"] .default-visible, .question-page:not([current-question="35"]) .last-question-visible {
        display: none;
    }

    .continue-button .default-visible {
        padding-right:33px;
    }

    .continue-button .default-visible:after {
        content:'';
        width:22px;
        height:22px;
        background:url(../assets/arrow.png);
        background-repeat:no-repeat;
        background-position:center;
        position:absolute;
        top:calc(50% - 11px);
        margin-left: 11px;
    }
    .reset-button span:after{
        content:'';
        width:22px;
        height:22px;
        background: url(../assets/reset.png);
        background-repeat:no-repeat;
        background-position:center;
        position:absolute;
        top:calc(50% - 11px);
        margin-left: 11px;
    }

    .reset-button span {
        padding-right: 32px;
    }

    .source {
        color: rgb(185, 189, 190);
        text-align: center;
        padding-top: 12px;
        font-size: 11px;
        line-height: 20px;
    }

    .question-image[idx="1"] {   background-image: url(../assets/eye-images/1.jpg); }
    .question-image[idx="2"] {   background-image: url(../assets/eye-images/2.jpg); }
    .question-image[idx="3"] {   background-image: url(../assets/eye-images/3.jpg); }
    .question-image[idx="4"] {   background-image: url(../assets/eye-images/4.jpg); }
    .question-image[idx="5"] {   background-image: url(../assets/eye-images/5.jpg); }
    .question-image[idx="6"] {   background-image: url(../assets/eye-images/6.jpg); }
    .question-image[idx="7"] {   background-image: url(../assets/eye-images/7.jpg); }
    .question-image[idx="8"] {   background-image: url(../assets/eye-images/8.jpg); }
    .question-image[idx="9"] {   background-image: url(../assets/eye-images/9.jpg); }
    .question-image[idx="10"] {   background-image: url(../assets/eye-images/10.jpg); }
    .question-image[idx="11"] {   background-image: url(../assets/eye-images/11.jpg); }
    .question-image[idx="12"] {   background-image: url(../assets/eye-images/12.jpg); }
    .question-image[idx="13"] {   background-image: url(../assets/eye-images/13.jpg); }
    .question-image[idx="14"] {   background-image: url(../assets/eye-images/14.jpg); }
    .question-image[idx="15"] {   background-image: url(../assets/eye-images/15.jpg); }
    .question-image[idx="16"] {   background-image: url(../assets/eye-images/16.jpg); }
    .question-image[idx="17"] {   background-image: url(../assets/eye-images/17.jpg); }
    .question-image[idx="18"] {   background-image: url(../assets/eye-images/18.jpg); }
    .question-image[idx="19"] {   background-image: url(../assets/eye-images/19.jpg); }
    .question-image[idx="20"] {   background-image: url(../assets/eye-images/20.jpg); }
    .question-image[idx="21"] {   background-image: url(../assets/eye-images/21.jpg); }
    .question-image[idx="22"] {   background-image: url(../assets/eye-images/22.jpg); }
    .question-image[idx="23"] {   background-image: url(../assets/eye-images/23.jpg); }
    .question-image[idx="24"] {   background-image: url(../assets/eye-images/24.jpg); }
    .question-image[idx="25"] {   background-image: url(../assets/eye-images/25.jpg); }
    .question-image[idx="26"] {   background-image: url(../assets/eye-images/26.jpg); }
    .question-image[idx="27"] {   background-image: url(../assets/eye-images/27.jpg); }
    .question-image[idx="28"] {   background-image: url(../assets/eye-images/28.jpg); }
    .question-image[idx="29"] {   background-image: url(../assets/eye-images/29.jpg); }
    .question-image[idx="30"] {   background-image: url(../assets/eye-images/30.jpg); }
    .question-image[idx="31"] {   background-image: url(../assets/eye-images/31.jpg); }
    .question-image[idx="32"] {   background-image: url(../assets/eye-images/32.jpg); }
    .question-image[idx="33"] {   background-image: url(../assets/eye-images/33.jpg); }
    .question-image[idx="34"] {   background-image: url(../assets/eye-images/34.jpg); }
    .question-image[idx="35"] {   background-image: url(../assets/eye-images/35.jpg); }
    .question-image[idx="36"] {   background-image: url(../assets/eye-images/36.jpg); }

    .i-popup {
        position: relative;
        display: inline-block;
        width: calc(100% - 60px);
        height: auto;
        background-color: #FFFFFF;
        z-index: 51;
        -webkit-box-shadow: 0px 0px 15px 0px rgba(50, 50, 50, 0.75);
        -moz-box-shadow: 0px 0px 15px 0px rgba(50, 50, 50, 0.75);
        box-shadow: 0px 0px 15px 0px rgba(50, 50, 50, 0.75);
        padding: 20px;
        margin: auto;
        top: 50%;
        left: 50%;
        bottom: auto;
        right: auto;
        transform: translate(-50%, -50%);
    }

    .i-cover {
        border-radius: 0px;
    }
    
    .citation {
        width: 100%;
        padding: 8px 16px;
        color: #787878;
        background: #f5f5f5;
        box-sizing:border-box;
    }
    
    .citation-link {
        color: #17b0ca;
        cursor: pointer;
    }
}