html,body {
    color: black;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    user-drag: none;
    -webkit-user-drag: none;
    font-family: "Roboto", "Helvetica", "Arial", Sans-serif;
    font-size: 14px;
    text-transform: initial;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -moz-osx-font-smoothing: grayscale;
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    min-height: 100%;
    opacity: 0.999999;  /* ios8 hotfix */
    overflow: hidden;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    position: absolute;
    -webkit-overflow-scrolling: touch;
    -webkit-backface-visibility: hidden;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
#zbtextbox {
    -webkit-user-select: auto !important;
}
#zbtextbox:focus {
    outline: none;
}
#zbcopyfield {
    -webkit-user-select: auto !important;
}/* https://groups.google.com/forum/#!topic/paperjs/g5gFajlNIg4 *//* Scale canvas with resize attribute to full size */
canvas[resize] {
    width: 100%;
    height: 100%;
}
.switcherON {
    -webkit-box-shadow: 0px 2px 8px 0px rgba(0, 0, 0, 0.5);
    -moz-box-shadow: 0px 2px 8px 0px rgba(0, 0, 0, 0.5);
    box-shadow: 0px 2px 8px 0px rgba(0, 0, 0, 0.5);
}
.switcherOFF {
    -webkit-box-shadow: 0px 1px 5px 0px rgba(0, 0, 0, 0.5);
    -moz-box-shadow: 0px 1px 5px 0px rgba(0, 0, 0, 0.5);
    box-shadow: 0px 1px 5px 0px rgba(0, 0, 0, 0.5);
}
.switcherHitArea {
    cursor: pointer;
}
.bgcanvas {
    z-index: 9;
    top: 0px;
    left: 0px;
    position: absolute;
}
.shield {
    z-index: 10;
    position: absolute;
    top: 0px;
    left: 0px;
    box-sizing: border-box;
}
.selectable {  /* For Opera and <= IE9, we need to add unselectable="on" attribute onto each element */  /* Check this site for more details: http://help.dottoro.com/lhwdpnva.php */
    -moz-user-select: text;  /* These user-select properties are inheritable, used to prevent text selection */
    -webkit-user-select: text;
    -ms-user-select: text;  /* From IE10 only */
    user-select: text;  /* Not valid CSS yet, as of July 2012 */
    -webkit-user-drag: initial;  /* Prevents dragging of images/divs etc */
    user-drag: initial;
    pointer-events: initial;
    cursor: default;
}
.unselectable {  /* For Opera and <= IE9, we need to add unselectable="on" attribute onto each element */  /* Check this site for more details: http://help.dottoro.com/lhwdpnva.php */
    -moz-user-select: none;  /* These user-select properties are inheritable, used to prevent text selection */
    -webkit-user-select: none;
    -ms-user-select: none;  /* From IE10 only */
    user-select: none;  /* Not valid CSS yet, as of July 2012 */
    -webkit-user-drag: none;  /* Prevents dragging of images/divs etc */
    user-drag: none;
    pointer-events: none;
}
textarea:focus,input:focus {
    outline: 0;
}
.debug {
    position: absolute;
    z-index: 0;
    top: 80px;
    left: 0px;
    padding: 0px;
    pointer-events: none;
    font-family: monospace;
}
.debug p {
    font-size: 8px;
    margin: 0;
    color: black;
    background-color: lime;
    padding: 2px;
    padding-left: 5px;
}
.passive {
    background-color: #f5f5f5;
}
input:focus {
    outline: none;
}
input:-webkit-autofill {
    -webkit-box-shadow: 0 0 0px 1000px white inset;
}
input {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border-radius: 0;
    background-color: transparent;
}
input[type=text] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border-radius: 0;
    background-color: transparent;
}/* ****************************************************** *//* ********************* CARD FATHER ******************** *//* ****************************************************** */
.zitelayer {
    position: absolute;
    z-index: 111;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    background-color: rgba(33, 33, 33, 0.5);
    display: none;
}
.zitecontainer {
    position: relative;
    width: 500px;
    height: 300px;
    margin: auto;
    background-color: #f5f5f5;
    border-radius: 6px;
}
.ziteheader {
    position: static;
    width: 100%;
    height: 36px;
    background-color: #222;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    background: linear-gradient(45deg, #222222, #4d0080);
}
.zitetitle {
    position: absolute;
    height: 36px;
    line-height: 36px;
    color: white;
    padding-left: 16px;
}
.zitebutton {
    position: absolute;
    width: 82px;
    height: 24px;
    left: 100px;
    top: 4px;
    border: 1px solid #ffcc00;
    line-height: 24px;
    color: #ffcc00;
    cursor: pointer;
    padding-left: 12px;
    border-radius: 8px;
}
.zitebutton:hover {
    background-color: #333;
}
.ziteclose {
    position: absolute;
    right: 0px;
    top: 0px;
    width: 36px;
    height: 36px;
    background-image: none;
    background-repeat: no-repeat;
    background-position: center;
    border-top-right-radius: 6px;
    cursor: pointer;
}
.zitesettings {
    position: absolute;
    right: 36px;
    top: 0px;
    width: 36px;
    height: 36px;
    background-image: none;
    background-repeat: no-repeat;
    background-position: center;
    cursor: pointer;
}
.zitebody {
    position: absolute;
    left: 0px;
    top: 36px;
    width: 100%;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}
.zitelogindiv {
    position: absolute;
    z-index: 121;
    width: 100%;
    height: 90%;
    border-radius: 4px;
    background-color: rgba(250, 250, 250, 0.4);
}/* ****************************************************** *//* ********************* CARD HOTKEYS ******************* *//* ****************************************************** */
.hotkeysheader {
    position: absolute;
    width: 480px;
    height: 36px;
    left: 16px;
    top: 8px;
    line-height: 36px;
}
.hotkeyscontainer {
    position: absolute;
    width: 480px;
    height: 396px;
    left: 16px;
    top: 54px;
    overflow-x: hidden;
    overflow-y: scroll;
    -webkit-overflow-scrolling: auto;
}
.hotkeysitem {
    position: absolute;
    width: 464px;
    height: 36px;
    background-color: #ccc;
}
.hotkeysitem:nth-child(odd) {
    background-color: #ddd;
}
.hotkeysitem > .hotkeysrecorder {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    outline: none;
}
.hotkeysitem > .hotkeysrecorder > div {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 16px;
    height: 16px;
    margin: 10px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.6);
    pointer-events: none;
}
.hotkeysitem > .hotkeyswhich {
    position: absolute;
    left: 36px;
    top: 0px;
    width: 120px;
    height: 36px;
    line-height: 36px;
    border: none;
    outline: none;
    font-size: 16px;
    background-color: transparent;
    padding: 0px;
}
.hotkeysitem > .hotkeysreminder {
    position: absolute;
    left: 156px;
    top: 0px;
    width: 110px;
    height: 36px;
    line-height: 36px;
    border: none;
    outline: none;
    font-size: 16px;
    background-color: transparent;
    padding: 0px;
}
.hotkeysitem > select {
    position: absolute;
    left: 266px;
    width: 152px;
    height: 36px;
    border: none;
    outline: none;
    font-size: 16px;
    background-color: transparent;
    appearance: none;
    -moz-appearance: none;
    -webkit-appearance: none;
}
.hotkeysdelete {
    position: absolute;
    right: 0px;
    top: 0px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    background-image: url(${d});
    background-position: center;
    background-repeat: no-repeat;
}/* ****************************************************** *//* ********************* CARD BUTTON ******************** *//* ****************************************************** */
.cardbutton {
    position: absolute;
    height: 36px;
    background-color: rgba(77, 0, 128, 0.9);
    color: white;
    text-align: center;
    line-height: 36px;
    font-weight: 400;
    border-radius: 4px;
    cursor: pointer;
    box-sizing: border-box;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.3);
    -webkit-transition: background-color 0.3s, box-shadow 0.3s, color 0.3s;
    transition: background-color 0.3s, box-shadow 0.3s, color 0.3s;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
.no-touch .cardbutton:hover {
    background-color: #4d0080;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.3);
}
.cardbutton:hover:active {
    background-color: #3e0066;
}/* ****************************************************** *//* ****************************************************** *//* ****************************************************** */
.cardtext {
    position: absolute;
    width: 100%;
    line-height: normal;
    box-sizing: border-box;
    padding-left: 16px;
    padding-right: 16px;
    text-align: left;
    background-color: transparent;
}
.cardinput {
    position: absolute;
    width: 100%;
    height: 36px;
    background-color: white;
    text-align: left;
    line-height: 36px;
    box-sizing: border-box;
    padding: 0px;
    padding-left: 8px;
    border: 1px solid rgba(128, 128, 128, 0.45);
    border-radius: 4px;
    font-family: Roboto;
    font-size: 16px;
    font-weight: 400;
}
.cardinputemail {
    width: 90%;
    text-align: left;
    padding: 0px;
    padding-left: 0px;
    border: 0px;
    font-family: Roboto;
    font-size: 16px;
    font-weight: 400;
}
.cardtextarea {
    background-color: white;
    text-align: left;
    padding: 0px;
    padding-left: 8px;
    padding-top: 8px;
    border: 1px solid rgba(128, 128, 128, 0.45);
    border-radius: 4px;
    font-family: Roboto;
    font-size: 16px;
    font-weight: 400;
}/* ****************************************************** *//* *********************** BURGER *********************** *//* ****************************************************** */
.burgercontainer {
    z-index: 121;
    position: absolute;
    left: 0px;
    top: 0px;
    height: 100%;
    margin: auto;
    background-color: white;
}
.burgerheader {
    position: absolute;
    left: 0px;
    top: 0px;
    background-color: #222;
}
.burgerprofileicon {
    position: absolute;
    left: 12px;
    top: 12px;
    width: 48px;
    height: 48px;
    background-position: center;
    background-repeat: no-repeat;
    background-size: 48px;
    border-radius: 50%;
}
.burgerbadge {
    position: absolute;
    left: 46px;
    top: 50px;
    width: 21px;
    height: 12px;
    background-color: #ffcc00;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: 4px;
}
.burgerprofilename {
    position: absolute;
    left: 72px;
    top: 24px;
    width: 100px;
    color: white;
    font-weight: 500;
    cursor: pointer;
    -webkit-user-modify: read-write;
    -webkit-user-select: text;
    user-select: text;
}
.burgerarrow {
    position: absolute;
    right: 24px;
    top: 24px;
    width: 24px;
    height: 24px;
    background-position: center;
    background-repeat: no-repeat;
}
.burgerbody {
    position: absolute;
    left: 0px;
    top: 72px;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    overflow-y: overlay;
}
.burgeritem {
    position: absolute;
    width: 100%;
    height: 48px;
    background-position: 24px center;
    background-repeat: no-repeat;
    background-color: white;
    line-height: 48px;
    cursor: pointer;
    padding-left: 60px;
    box-sizing: border-box;
}/* ****************************************************** *//* ****************************************************** *//* ****************************************************** */
.radio {
    width: 100%;
    display: inline-block;
    font-size: 14px;
    line-height: 36px;
    cursor: pointer;
    padding-left: 12px;
}
.radio input {
    width: 1px;
    height: 1px;
    opacity: 0;
}
.radio input:checked + .radiocircle .radiodot {
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    opacity: 1;
}
.radio input:checked + .radiocircle {
    border: 2px solid #212121;
}
.radio input:focus + .radiocircle .radiodot {
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    opacity: 1;
    background-color: #212121;
}
.radio .radiocircle {
    width: 16px;
    height: 16px;
    display: block;
    float: left;
    margin: 8px 8px 8px 8px;
    border: 2px solid #212121;
    border-radius: 50%;
    background-color: #f5f5f5;
}
.radio .radiodot {
    -webkit-transition: all 0.25s ease-in-out;
    transition: all 0.25s ease-in-out;
    width: 12px;
    height: 12px;
    -webkit-transform: scale(0);
    -ms-transform: scale(0);
    transform: scale(0);
    display: block;
    margin: 2px;
    border-radius: 50%;
    background-color: #212121;
    opacity: 0;
}
.radiowrap {
    position: absolute;
}
.center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}
.centerhorizontal {
    position: absolute;
    left: 50%;
    transform: translate(-50%, 0);
}
.centervertical {
    position: absolute;
    top: 50%;
    transform: translate(0, -50%);
}
.inputdiv {
    position: absolute;
    left: 0px;
    width: 100%;
    height: 36px;
    box-sizing: border-box;
    padding-left: 16px;
    padding-right: 16px;
}
.inputdiv > input {
    position: static;
    width: 100%;
    height: 36px;
    background-color: white;
    text-align: left;
    line-height: 36px;
    box-sizing: border-box;
    padding: 0px;
    padding-left: 8px;
    border: 1px solid rgba(128, 128, 128, 0.45);
    border-radius: 4px;
    font-family: Roboto;
    font-size: 16px;
    font-weight: 400;
}/* ****************************************************** *//* *********************** COLOR ************************ *//* ****************************************************** */
.colorpicker {
    position: absolute;
    width: 36px;
    height: 36px;
    background-color: rgba(158, 158, 158, 0.2);
    background-repeat: no-repeat;
    background-position: center;
    border-radius: 4px;
    cursor: pointer;
}
.colorpalette {
    z-index: 10;
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #fafafa;
    display: none;
}
.paletteitem {
    position: absolute;
    width: 28px;
    height: 28px;
    border: '1px solid rgba(128, 128, 128, .45)';
    background-color: rgba(158, 158, 158, 0.2);
    border-radius: 4px;
    cursor: pointer;
}/* ****************************************************** *//* ****************************************************** *//* ****************************************************** *//* ****************************************************** *//* *********************** TOGGLE *********************** *//* ****************************************************** */
.toggle {
    position: absolute;
    width: 96px;
    height: 48px;
    cursor: pointer;
}
.toggle > .togglebackground {
    position: absolute;
    left: 24px;
    top: 15px;
    width: 48px;
    height: 18px;
    border-radius: 18px;
    background-color: #afafaf;
    pointer-events: none;
}
.toggle > .togglebutton {
    position: absolute;
    left: 24px;
    top: 12px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: white;
    pointer-events: none;
    box-sizing: border-box;
    border: 0px solid black;
    -webkit-box-shadow: 0px 2px 8px 0px rgba(0, 0, 0, 0.5);
    -moz-box-shadow: 0px 2px 8px 0px rgba(0, 0, 0, 0.5);
    box-shadow: 0px 2px 8px 0px rgba(0, 0, 0, 0.5);
}/* ****************************************************** *//* ****************************************************** *//* ****************************************************** *//* ****************************************************** *//* *********************** SELECT *********************** *//* ****************************************************** */
.selectbutton {
    position: absolute;
    z-index: 40;
    width: 36px;
    height: 36px;
    line-height: 36px;
    cursor: pointer;
    color: black;
    border-radius: 4px;
    border: solid 1px #ccc;
    text-align: center;
    font-size: 10px;
    background-image: none;
    background-repeat: no-repeat;
    background-position: center;
}/* ****************************************************** *//* ****************************************************** *//* ****************************************************** *//* ***************************************************** *//* *********************** ICON ************************ *//* ***************************************************** */
.formula_container {
    width: 80%;
    height: 60%;
    left: 0px;
    top: 0px;
    max-width: 600px;
    max-height: 350px;
    background-color: #cfd8dc;
    position: absolute;
    overflow: hidden;
    z-index: 250;
    pointer-events: initial;
}
.formula_header {
    width: 100%;
    height: 36px;
    background-color: #404040;
    position: absolute;
    z-index: 2;
    cursor: default;
    transition: background-color 0s;
}
.formula_title {
    width: auto;
    height: 36px;
    float: left;
    line-height: 36px;
    padding-left: 8px;
    font-family: sans-serif;
    font-size: 13px;
    color: #fff;
    pointer-events: none;
}
.formula_close {
    width: 36px;
    height: 36px;
    background-image: none;
    background-size: auto;
    background-repeat: no-repeat;
    background-position: center;
    float: right;
    cursor: pointer;
}
.formula_button {
    width: auto;
    height: 36px;
    float: right;
    color: grey;
    font-size: 18px;
    text-align: center;
    line-height: 36px;
    margin-right: 36px;
    cursor: default;
}
#formulaeditor {
    position: absolute;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding-top: 36px;
}
.iconhitarea {
    position: absolute;
    z-index: 30;
    width: 64px;
    height: 64px;
    user-drag: none;
    -webkit-user-drag: none;
    
}/* ****************************************************** *//* ****************************************************** *//* ****************************************************** */
.icon{
    position: absolute;
    left: 8px;
    top: 8px;
    width: 48px;
    height: 48px;
    background-color: rgba(255, 255, 255, 0.7);
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 50%;
    background-image: none;
    background-repeat: no-repeat;
    background-position: center;
    background-size: 24px 24px;
    user-drag: none;
    -webkit-user-drag: none;
}

#tool_container {
    position: absolute;
    border: solid 1px #cccccc;
    border-radius: 6px;
    display: none;
    z-index: 32;
}
#tool_header {
    position: absolute;
    cursor: grab;
    background-color: #ccc;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
}
#tool_header:hover {
    background-color: black;
}
#tool_header:active {
    background-color: black;
}
#tool_column1 {
    position: absolute;
}
#tool_column2 {
    position: absolute;
}
.tool_hitarea {
    position: absolute;
    width: 32px;
    height: 32px;
    cursor: pointer;
    background-repeat: no-repeat;
    background-position: center;
    background-size: 24px;
}
.tool_hitarea > div {
    pointer-events: none;
}
.pen_color_select_area {
    position: absolute;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0);
}
.pen_color {
    position: absolute;
    width: 28px;
    height: 28px;
    left: 2px;
    top: 2px;
    border: none;
    border-radius: 50%;
}
.pen_font {
    width: 32px;
    height: 32px;
    position: absolute;
    text-align: center;
    opacity: 0.5;
}
.pen_stroke {
    position: absolute;
    background-color: black;
    opacity: 0.5;
}
#tool_107 > div {
    opacity: 0.5;
}
#tool_108 > div {
    opacity: 0.5;
}
#tool_109 > div {
    opacity: 0.5;
}
#tool_207 > div {
    width: 20px;
    height: 2px;
    left: 5px;
    top: 14px;
    border-radius: 1px;
    opacity: 0.5;
}
#tool_208 > div {
    width: 22px;
    height: 5px;
    left: 4px;
    top: 13px;
    border-radius: 4px;
    opacity: 0.5;
}
#tool_209 > div {
    width: 24px;
    height: 10px;
    left: 3px;
    top: 11px;
    border-radius: 4px;
    opacity: 0.5;
}
#tool_110 > div {
    opacity: 0.5;
}
#tool_111 > div {
    opacity: 0.5;
}
#tool_112 > div {
    opacity: 0.5;
}
#zoom_header {
    display: block;
    position: absolute;
    z-index: 30;
    cursor: grab;
    background-color: #ccc;
}
#zoom_header:hover {
    background-color: black;
}
#zoom_header:active {
    background-color: black;
}
.zoomlevels {
    display: block;
    position: absolute;
    z-index: 30;
    width: 32px;
    height: 32px;
    right: 0;
    text-align: center;
    line-height: 32px;
    background-color: #ccc;
    background-size: auto;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.5;
    cursor: pointer;
    border-radius: 0px 0px 0px 0px;
}



.countdown-items{
    top:1px;
    left:15px;
    position:fixed;
    padding:5px;
    color:#FC0000;
}

.countdown-itemm {
    top:20px;
    left:5px;
    display: flex;
    flex-direction: column;
    position:fixed;
    padding:5px;
    color:#FC0000;
}

.countdown-itemh {
    top:20px;
    left:30px;
    display: flex;
    flex-direction: column;
    position:fixed;
    padding:5px;
    color:#FC0000;
}

.countdown-itemc {
    top:20px;
    left:25px;
    display: flex;
    flex-direction: column;
    position:fixed;
    padding:5px;
    color:#FC0000;
}

.countdown-label {
    margin-top: -3px;
    font-size: 10px;
    color: #000000;
    margin-left: 2px;
    font-weight: bold;
}

.mtcol {
    margin-top: -2px;
    padding-left: -30px;
    font-size: 18px;
    color: #FC0000;
    font-weight: bold;

}

.countdown-number {
    font-size: 18px;
    font-weight: bold;
}

.LessonInfo{
    top:60px;
    right:10px;
    display: flex;
    flex-direction: column;
    position:fixed;
    padding:10px;
}
.LessonInfo span{
    font-size:12px;
}
.LessonInfo label{
    color: #FC0000;
}
@media only screen and (max-width: 767px) {
.boardnote{
    margin-top:50%;
    padding:10px;
}

}    

.boardnote{
    margin-top:20%;
    padding:10px;
}