.exercise-content {
  opacity: 0;
  transition: opacity 0.5s;
}
.exercise-content.exercise-content-loaded {
  opacity: 1;
}
script[type='math/tex'] {
  display: none !important;
}
.exercisecontainermodel #article {
  max-width: 580px;
  max-width: 58rem;
}
.exercisecontainermodel .menubreadcrumbs {
  display: none;
}
.mathexerciseengine .box {
  border: 1px solid;
  border-color: #d6d2d2 !important;
  background-color: #f6f3f3;
  margin: 10px 0 0;
  position: relative;
  color: black;
  padding: 15px;
}
/*.mathexerciseengine .box > div { border-right: 1px solid #d6d2d2; border-left: 1px solid #d6d2d2; }*/

.exercisecontainermodel .mathexerciseengine .box {
  border-bottom: 1px solid #d6d2d2;
}
html body .mathexerciseengine .button {
  margin: 10px 0 0;
  width: auto;
  height: auto;
  text-align: center;
  color: white;
  font-size: 15px;
  font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
  font-weight: 600;
  display: inline-block;
  padding: 9px 10px 11px;
  border: 1px solid #11a523;
  text-shadow: 0 1px 1px #666666;
  background: #13d329;
  /* Old browsers */

}
.lte8 .mathexerciseengine .button {
  filter: dropshadow(color=#666666, offx=0, offy=1);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#21d535', endColorstr='#12c727', GradientType=0);
  /* IE6-8 */

}
.ie9 .mathexerciseengine .button {
  background: url(data:image/svg+xml;base64,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);
}
.mathexerciseengine .button:hover {
  background: #1fc42f;
  /* Old browsers */
  background: -moz-linear-gradient(top, #1fc42f 0, #12b720 100%);
  /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0, #1fc42f), color-stop(100%, #12b720));
  /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top, #1fc42f 0, #12b720 100%);
  /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top, #1fc42f 0, #12b720 100%);
  /* Opera 11.10+ */
  background: -ms-linear-gradient(top, #1fc42f 0, #12b720 100%);
  /* IE10+ */
  background: linear-gradient(to bottom, #1fc42f 0, #12b720 100%);
  /* W3C */

}
.lte8 .mathexerciseengine .button:hover {
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#1fc42f', endColorstr='#12b720', GradientType=0);
  /* IE6-8 */

}
.ie9 .mathexerciseengine .button:hover {
  background: url(data:image/svg+xml;base64,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);
}
input::-ms-clear {
  display: none;
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.mathexerciseengine .button.gray {
  color: black;
  font-weight: normal;
  text-shadow: none;
  background: white;
  background: linear-gradient(to bottom, #ebebeb 0%, white 100%);
  background: -webkit-linear-gradient(to bottom, #ebebeb 0%, white 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #ebebeb), color-stop(100%, #fcfcfc));
  /* Chrome,Safari4+ */
  border: 1px solid #c9c9c9;
  box-shadow: inset 0px 1px 0px rgba(255, 255, 255, 0.9), 0px 1px 1px rgba(0, 0, 0, 0.08);
}
.lte8 .mathexerciseengine .button.gray {
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f8f8f8', endColorstr='#e1e1e1', GradientType=0);
  /* IE6-8 */

}
.ie9 .mathexerciseengine .button.gray {
  background: url(data:image/svg+xml;base64,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);
}
.mathexerciseengine .button.gray:hover {
  background: white;
  /* Old browsers */

}
.lte8 .mathexerciseengine .button.gray:hover {
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ededed', endColorstr='#d3d3d3', GradientType=0);
  /* IE6-8 */

}
.ie9 .mathexerciseengine .button.gray:hover {
  background: url(data:image/svg+xml;base64,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);
}
html .mathexerciseengine .button.wide {
  width: 500px;
}
.mathexerciseengine .button.selected,
.mathexerciseengine .button.selected:hover {
  color: white;
  -webkit-box-shadow: inset 0 3px 3px 0 #666161;
  -moz-box-shadow: inset 0 3px 3px 0 #666161;
  box-shadow: inset 0 3px 3px 0 #666161;
  background: #7b7a7a;
  /* Old browsers */

}
.lte8 .mathexerciseengine .button.selected,
.lte8 .mathexerciseengine .button.selected:hover {
  color: white;
  background: #7b7a7a;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#7b7a7a', endColorstr='#7b7a7a', GradientType=0);
  /* IE6-8 */

}
.ie9 .mathexerciseengine .button.selected,
.ie9 .mathexerciseengine .button.selected:hover {
  background: url(data:image/svg+xml;base64,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);
}
.mathexerciseengine .button.incorrect.selected,
.mathexerciseengine .button.incorrect.selected:hover {
  -webkit-box-shadow: inset 0 3px 3px 0 #a72823;
  box-shadow: inset 0 3px 3px 0 #a72823;
  background: #d33110;
  background: -moz-linear-gradient(top, #d33110 0, #e23412 100%);
  /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0, #d33110), color-stop(100%, #e23412));
  /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top, #d33110 0, #e23412 100%);
  /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top, #d33110 0, #e23412 100%);
  /* Opera 11.10+ */
  background: -ms-linear-gradient(top, #d33110 0, #e23412 100%);
  /* IE10+ */
  background: linear-gradient(to bottom, #d33110 0, #e23412 100%);
  /* W3C */

}
.lte8 .mathexerciseengine .button.incorrect.selected,
.lte8 .mathexerciseengine .button.incorrect.selected:hover {
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#d33110', endColorstr='#e23412', GradientType=0);
  /* IE6-8 */

}
.ie9 .mathexerciseengine .button.incorrect.selected,
.ie9 .mathexerciseengine .button.incorrect.selected:hover {
  background: url(data:image/svg+xml;base64,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);
}
.mathexerciseengine .button.correct.selected,
.mathexerciseengine .button.correct.selected:hover {
  -webkit-box-shadow: inset 0 3px 3px 0 #15ac15;
  box-shadow: inset 0 3px 3px 0 #15ac15;
  background: #13cd29;
  background: -moz-linear-gradient(top, #13cd29 0, #15d82c 100%);
  /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0, #13cd29), color-stop(100%, #15d82c));
  /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top, #13cd29 0, #15d82c 100%);
  /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top, #13cd29 0, #15d82c 100%);
  /* Opera 11.10+ */
  background: -ms-linear-gradient(top, #13cd29 0, #15d82c 100%);
  /* IE10+ */
  background: linear-gradient(to bottom, #13cd29 0, #15d82c 100%);
  /* W3C */

}
.lte8 .mathexerciseengine .button.correct.selected,
.lte8 .mathexerciseengine .button.correct.selected:hover {
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#13cd29', endColorstr='#15d82c', GradientType=0);
  /* IE6-8 */

}
.ie9 .mathexerciseengine .button.correct.selected,
.ie9 .mathexerciseengine .button.correct.selected:hover {
  background: url(data:image/svg+xml;base64,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);
}
.mathexerciseengine .navbuttons {
  margin: 15px 0 0;
}
.mathexerciseengine .navbuttons + .navbuttons {
  margin-top: 0;
}
.mathexerciseengine .interaction .navbuttons .button,
.mathexerciseengine .interaction .navbuttons .button.submit {
  margin: 10px 0 0;
}
.mathexerciseengine .interaction .navbuttons .button.show {
  font-size: 15px;
  line-height: 18px;
}
.mathexerciseengine .interaction button.button.gray:focus {
  outline: 0;
}
.mathexerciseengine .interaction .MathJax:focus {
  outline: 0;
}
#article .mathexerciseengine.header .button,
#article .mathexerciseengine.list .button {
  margin: 2px 0 6px;
  padding: 2px 10px;
  font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
  font-weight: 500;
  line-height: 21px;
}
#article .mathexerciseengine.list ul {
  margin: 0;
}
#article .mathexerciseengine.list > ul {
  border: none;
}
#article .mathexerciseengine.list > ul > li {
  padding: 10px;
}
#article .mathexerciseengine.list > ul > li > ul {
  border-width: 1px 0;
  margin: 0;
}
#article .mathexerciseengine.list > ul > li > ul > li {
  padding: 0;
  border: 1px solid #cccccc;
  margin-top: 6px;
}
#article .mathexerciseengine.list > ul > li > ul > li > div {
  padding: 5px;
  line-height: 30px;
  background-color: white;
}
#article .mathexerciseengine.list > ul > li a {
  font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
  font-weight: 400;
  font-size: 20px;
}
#article .mathexerciseengine.list > ul > li > ul > li a {
  font-size: 16px;
}
#article .mathexerciseengine.list ul li ul li ul {
  border: none;
  margin: 0 -1px;
}
#article .mathexerciseengine.list ul li ul li ul li {
  padding: 5px 6px 5px 13px;
}
#article .mathexerciseengine.list ul li ul li ul li a {
  font-weight: normal;
  font-size: 14px;
}
#article .mathexerciseengine.list ul li ul li ul li a.button {
  color: white;
}
#article .mathexerciseengine.list ul li ul li ul li {
  margin-top: 0;
  padding: 4px 6px 0px 20px;
}
#article .mathexerciseengine.list ul li ul li ul li ul {
  border: none;
  margin: 0px -6px 0px -20px;
}
#article .mathexerciseengine.list ul li ul li ul li ul li {
  padding: 0px 6px 6px 40px;
  line-height: 16px;
}
#article .mathexerciseengine ul {
  margin: 0;
  list-style: none;
  border: none;
  -webkit-border-radius: 3px;
  border-radius: 3px;
  line-height: 24px;
}
#article .mathexerciseengine.header ul {
  height: 0;
  overflow: hidden;
  display: none;
}
#article .mathexerciseengine.list ul ul {
  height: 0;
  overflow: hidden;
  display: none;
}
#article .mathexerciseengine ul li {
  margin-left: 0;
  margin-right: 0;
  list-style-type: none;
}
#article .mathexerciseengine.list > ul > li:first-child {
  border-top-style: solid;
}
#article .mathexerciseengine ul li.box:first-child {
  border-top-style: solid;
}
#article .mathexerciseengine .row > div:first-child {
  float: left;
  font-size: 16px;
  line-height: 31px;
}
#article .mathexerciseengine .row > div + div {
  float: right;
}
html .mathexerciseengine ul .button {
  padding: 5px 10px;
}
.mathexerciseengine.header a {
  font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
  font-weight: 600;
}
.mathexerciseengine.header .button + a {
  margin: 0 0 0 15px;
}
.mathexerciseengine.exercise {
  padding: 0;
  margin-top: 3rem;
  min-height: 100vh;
}
.tabsubcontent .mathexerciseengine.exercise {
  margin-top: 2.4rem;
}
.mathexerciseengine.exercise .box {
  padding: 0;
}
.mathexerciseengine.exercise .breadcrumb {
  font-size: 16px;
  font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
  font-weight: 500;
  line-height: 22px;
  padding: 12px 15px;
  text-transform: none;
  border-bottom: 1px solid #cfcfcf;
}
.mathexerciseengine .monitor {
  padding: 6px 15px 6px;
}
.mathexerciseengine .monitor a {
  display: inline-block;
  text-align: center;
  width: 37px;
  height: 37px;
  background: white;
  background: url(/images/sprite.bullet.png) no-repeat;
  background-position: -49px 0;
}
.mathexerciseengine .monitor a.correct {
  background-position: -49px -45px;
}
.mathexerciseengine .monitor a.incorrect {
  background-position: -49px -91px;
}
.mathexerciseengine .monitor a.current {
  background-position: 0 0;
}
.mathexerciseengine .monitor a.current.correct {
  background-position: 0 -45px;
}
.mathexerciseengine .monitor a.current.incorrect {
  background-position: 0 -91px;
}
.mathexerciseengine .monitor .center > div {
  display: flex;
  flex-wrap: wrap;
}
.mathexerciseengine .definition {
  background-color: white;
  padding: 25px 30px;
}
.mathexerciseengine .definition h1 {
  font-size: 24px;
  line-height: 30px;
  text-transform: none;
  margin-bottom: 10px;
  letter-spacing: normal;
}
.mathexerciseengine .definition p {
  margin: 10px 0 0;
  font-size: 18px;
  line-height: 25px;
}
.mathexerciseengine .definition p + img {
  margin: 20px 0 5px;
}
.mathexerciseengine .chart {
  margin: 0 auto;
  width: 510px;
  height: 510px;
  border: 10px solid #e7e7e7;
  background: white;
  position: relative;
  direction: ltr;
}
.mathexerciseengine .chart.correct {
  border-color: #1fe235;
}
.mathexerciseengine .chart.incorrect {
  border-color: #f41c1c;
}
.mathexerciseengine .interaction {
  padding: 20px 9px 35px;
}
.mathexerciseengine .interaction input {
  text-align: right;
  border: 1px solid #cfcfcf;
  color: #333333;
  font-size: 25px;
  display: block;
  width: 290px;
  padding: 6px 10px;
  -webkit-border-radius: 3px;
  border-radius: 3px;
}
.mathexerciseengine .interaction select {
  -webkit-appearance: menulist-button;
  height: 48px;
  font-size: 20px;
  border: 1px solid #cfcfcf;
  padding: 6px 5px;
  width: 311px;
  -webkit-border-radius: 3px;
  border-radius: 3px;
}
.arabic.matte-1 .mathexerciseengine .interaction input,
.arabic.matte-2 .mathexerciseengine .interaction input,
.arabic.matte-3 .mathexerciseengine .interaction input,
.arabic.matte-4 .mathexerciseengine .interaction input,
.arabic.matte-5 .mathexerciseengine .interaction input {
  direction: ltr;
}
.mathexerciseengine .interaction input.correct,
.mathexerciseengine .interaction select.correct {
  background-color: #43e053;
}
.mathexerciseengine .interaction input.incorrect,
.mathexerciseengine .interaction select.incorrect {
  background-color: #fb8e8e;
}
.mathexerciseengine .interaction .cols {
  margin: 10px 0 0;
  display: block;
}
.mathexerciseengine .interaction .cols > * {
  display: block;
  float: left;
  margin: 0;
}
.mathexerciseengine .interaction .cols > span {
  width: 170px;
  padding: 13px 0 0 12px;
  font-size: 18px;
  line-height: 25px;
}
.mathexerciseengine .interaction .cols > span:first-child {
  text-align: right;
  padding: 13px 12px 0 0;
}
.mathexerciseengine .interaction .cols.func > input {
  width: 75px;
  margin-bottom: 10px;
  -webkit-appearance: none;
}
.mathexerciseengine .interaction .cols.func > span {
  width: auto;
  padding: 13px 12px 0;
}
.mathexerciseengine .interaction .button {
  display: block;
  width: 311px;
  line-height: 24px;
  font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
  font-weight: 500;
  cursor: pointer;
}
.mathexerciseengine .interaction .button.gray {
  font-size: 18px;
}
.mathexerciseengine .interaction .button.submit {
  font-size: 22px;
  margin: 25px 0 0;
  font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
  font-weight: 600;
}
.mathexerciseengine .interaction .additional {
  margin: 20px 0 0;
}
.mathexerciseengine .info {
  margin: 30px 20px 0;
  padding: 25px 30px 20px 30px;
  -webkit-border-radius: 3px;
  border-radius: 3px;
}
.mathexerciseengine .info h2 {
  text-align: center;
  font-size: 28px;
  line-height: 30px;
  text-transform: none;
  margin: 0;
  padding: 0;
  border: none;
}
.mathexerciseengine .info h2 .correct {
  color: #1bcd2f;
}
.mathexerciseengine .info h2 .incorrect {
  color: inherit;
}
.mathexerciseengine .info p {
  font-size: 16px;
  line-height: 22px;
}
.mathexerciseengine .info .button.gray.show {
  font-size: 14px;
  line-height: 17px;
  margin: 0 auto 20px;
  width: auto;
  padding: 7px 15px;
}
.center {
  float: left;
  position: relative;
  left: 50%;
}
.center > div {
  position: relative;
  left: -50%;
}
.mathexerciseengine .expand > span {
  display: block;
  float: left;
}
.mathexerciseengine .expand > span:first-child {
  margin: 6px 8px 0 8px;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 6px solid #2ca1b7;
}
.mathexerciseengine .expand.expanded > span:first-child {
  margin: 9px 6px 0 4px;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid #2ca1b7;
}
#article .mathexerciseengine.list > ul > li > ul > li .expand > span:first-child {
  margin: 10px 7px 0 7px;
  border-width: 5px;
}
#article .mathexerciseengine.list > ul > li > ul > li .expand > span + span {
  font-size: 18px;
}
#article .mathexerciseengine.list > ul > li > ul > li > ul > li {
  margin-left: 1px;
  margin-right: 1px;
  background-color: white;
  border-top: 1px solid #e1e1e1;
}
#article .mathexerciseengine.list > ul > li > ul > li > ul .expand > span + span {
  font-size: 16px;
}
#article .mathexerciseengine.list > ul > li > ul > li .expand.expanded > span:first-child {
  margin: 11px 5px 0 4px;
  border-width: 5px;
}
.mathexerciseengine .cssarrow {
  position: relative;
  background: white;
  border-top: 1px solid #cfcfcf;
  border-bottom: 1px solid #cfcfcf;
}
.mathexerciseengine .cssarrow:after,
.mathexerciseengine .cssarrow:before {
  top: 100%;
  border: solid transparent;
  content: " ";
  height: 0;
  width: 0;
  position: absolute;
  pointer-events: none;
}
.mathexerciseengine .cssarrow:after {
  border-top-color: white;
  border-width: 15px;
  left: 50%;
  margin-left: -15px;
  margin-top: -1px;
}
.mathexerciseengine .cssarrow:before {
  border-top-color: #cfcfcf;
  border-width: 15px;
  left: 50%;
  margin-left: -15px;
}
.mathexerciseengine .cssarrow.up:after,
.mathexerciseengine .cssarrow.up:before {
  bottom: 100%;
  top: inherit;
}
.mathexerciseengine .cssarrow.up:after {
  border-bottom-color: white;
  border-top-color: transparent;
  margin-bottom: -1px;
}
.mathexerciseengine .cssarrow.up:before {
  border-bottom-color: #cfcfcf;
  border-top-color: transparent;
  left: 50%;
}
.mathexerciseengine .info.cssarrow.up {
  border: 1px solid #cfcfcf;
}
.mathexerciseengine .chart {
  margin-top: 10px !important;
}
.nextbutton > * {
  display: block;
  float: left;
  cursor: pointer;
}
.nextbutton > :first-child {
  width: 20px;
  height: 20px;
  margin: 0 5px 0 0;
  background-image: url(/app/images/sprite.bullet.png);
  background-position: -2px -139px;
}
.nextbutton:hover {
  background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.18) 100%);
}
.clearfix:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.lte8 .clearfix {
  zoom: 1;
  display: block;
}
@media only screen and (max-width: 530px) {
  .mathexerciseengine .box {
    border-right: none;
    border-left: none;
  }
  .exercisecontainermodel .menubreadcrumbs + #article {
    padding: 0;
  }
  .exercisecontainermodel .mathexerciseengine.exercise {
    margin-top: 0;
  }
  .exercisecontainermodel #header {
    border-bottom: none;
  }
  .tabsubcontent .mathexerciseengine.exercise {
    margin-left: -15px;
    margin-right: -15px;
  }
}
@media only screen and (max-width: 699px) {
  .mathexerciseengine .interaction .cols {
    margin: 0;
  }
  .mathexerciseengine .interaction .cols:first-child {
    margin-top: 10px;
  }
  .mathexerciseengine .interaction .cols > span:first-child {
    width: 100%;
  }
  .mathexerciseengine .interaction .cols.func > span {
    width: 100%;
    padding: 0;
    margin: 2px 0 5px;
    -webkit-appearance: none;
  }
  .mathexerciseengine .interaction .cols.func > input {
    width: 100%;
    margin-bottom: 2px;
    padding-right: 5px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
  }
  .mathexerciseengine .definition {
    padding: 20px 12px;
  }
  .mathexerciseengine .interaction .button {
    width: 100%;
  }
  .mathexerciseengine .interaction input {
    width: 100%;
    padding: 5px 5px 5px 0;
    font-size: 28px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
  }
  .mathexerciseengine .interaction .cols > span:first-child {
    text-align: left;
    padding: 6px 15px 3px 0;
  }
  .mathexerciseengine .interaction .cols > span {
    padding: 0px;
    width: 100%;
    font-size: 18px;
    padding-top: 3px;
  }
  .mathexerciseengine .interaction .cols {
    padding: 0 12px 0px 12px;
  }
  .mathexerciseengine .interaction {
    padding: 10px 0 0;
  }
  .mathexerciseengine .interaction .navbuttons {
    padding: 0px 12px 30px 12px;
  }
  .mathexerciseengine .interaction .navbuttons + .navbuttons {
    margin-top: -30px;
  }
  .mathexerciseengine .interaction .navbuttons .button,
  .mathexerciseengine .interaction .navbuttons .button.submit {
    line-height: 24px;
  }
  .center {
    width: 100%;
  }
  .center > div {
    width: 100%;
  }
  .mathexerciseengine .interaction select {
    width: 100%;
    height: 45px;
  }
  .mathexerciseengine .chart {
    width: 250px;
    height: 250px;
  }
  .mathexerciseengine .interaction input + span {
    text-align: right;
  }
  .mathexerciseengine .box:first-child {
    margin: 0;
  }
  .mathexerciseengine .definition p {
    font-size: 16px;
    line-height: 21px;
  }
  .mathexerciseengine .definition h1 {
    font-size: 20px;
    line-height: 25px;
  }
  .mathexerciseengine .info {
    padding: 20px 15px 15px;
    margin: 30px 12px 0;
  }
  html .mathexerciseengine .button.wide {
    width: 100%;
  }
  .exercisecontainermodel #article {
    width: auto;
    min-height: 0;
  }
  .mathexerciseengine.list ul li ul li ul li {
    padding: 4px 6px 0px 6px;
  }
  #article .mathexerciseengine.list > ul > li {
    padding: 10px 6px 10px 6px;
  }
  #article .mathexerciseengine.list ul li ul li ul li {
    padding: 2px 4px 2px 6px;
  }
  #article .mathexerciseengine.list > ul > li > ul > li .expand > span + span {
    font-size: 15px;
    font-family: 'Poppins', 'Droid Arabic Kufi', sans-serif;
    font-weight: 500;
    max-width: 90%;
  }
  #article .mathexerciseengine.list > ul > li > ul > li > ul .expand > span + span {
    font-size: 13px;
  }
  .mathexerciseengine.exercise .breadcrumb {
    padding: 10px 12px 8px;
    font-size: 14px;
    line-height: 18px;
  }
  .mathexerciseengine .monitor {
    padding-left: 6px;
    padding-right: 6px;
  }
  .exercise-content,
  div[ng-if="vm.showResult"] {
    min-height: 100vh;
  }
}
@media only screen and (max-width: 950px) and (min-width: 700px) {
  .exercisecontainermodel .menubreadcrumbs + #article {
    padding: 0 0 40px 0px;
  }
  .exercisecontainermodel #article {
    min-width: 641px;
  }
  .mathexerciseengine .interaction .cols > span {
    width: 140px;
  }
}
@media only screen and (max-width: 1180px) and (min-width: 950px) {
  .exercisecontainermodel #article {
    max-width: 660px;
    max-width: 66rem;
  }
  .exercisecontainermodel .menubreadcrumbs + #article {
    padding: 0 0 40px 40px;
  }
  .mathexerciseengine.exercise {
    max-width: 650px;
  }
  .tabsubcontent .mathexerciseengine.exercise {
    max-width: none;
  }
  .mathexerciseengine .interaction .cols > span {
    width: 140px;
  }
}
@media only screen and (max-height: 650px) {
  .exercisecontainermodel #article {
    max-width: 660px;
    max-width: 66rem;
  }
}
@media only screen and (min-device-pixel-ratio: 2), only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min--moz-device-pixel-ratio: 2), only screen and (-o-min-device-pixel-ratio: 2/1) {
  .mathexerciseengine .monitor a,
  .mathexerciseengine .monitor a.correct,
  .mathexerciseengine .monitor a.incorrect,
  .mathexerciseengine .monitor a.current,
  .mathexerciseengine .monitor a.current.correct .mathexerciseengine .monitor a.current.incorrect {
    background-image: url(/images/sprite.bullet@2x.png);
    background-size: 94px 170px;
  }
}