html {
  font-family: sans-serif;
}

body {
  margin: 0px;
}

button, input, optgroup, select, textarea {
  color: inherit;
  font: inherit;
}

.smooth-scroll {
  scroll-behavior: smooth;
}

.math-error {
  padding: 6px;
  margin-top: 8px;
  margin-bottom: 4px;
  border-radius: 5px;
  display: block;
  transition-property: background-color;
  transition-duration: 0.5s;
  transition-timing-function: linear;
}

.mq-math-mode {
  vertical-align: 2px;
}

.transformation-suggestion {
  padding: 6px;
  margin-top: 8px;
  margin-bottom: 4px;
  border-radius: 5px;
  display: block;
}

.propagation-suggestion {
  padding: 6px;
  margin-top: 8px;
  margin-bottom: 4px;
  border-radius: 5px;
  display: block;
}

.goodjob-container {
  background-color: #8bd889;
}

.suggestion-container {
  background-color: #e1e3ff;
}

.error-container {
  background-color: #fdf6c1;
}

.neutral-container {
  background-color: #c7c7c7;
}


.correct-and-complete {
  background-color: #8bd889;
}

.equation-input-error {
  background-color: #fdd4c1;
  padding: 6px;
  margin-top: 5px;
  margin-left: 25px;
  width: 450px;
  border-radius: 5px;
  display: block;
}

.math-problem {
  display: block;
  padding-bottom: 2px;
}

.problem-statement {
  background-color: white;
}

.generated-step {
  background-color: #dde0ea;
  padding: 6px;
  border-radius: 5px;
  display: block;
}

.math-step-container .mq-editable-field {
  display: block;
  padding: 4px;
  border-radius: 4px;
  border-width: 1px;
  margin-top: 7px;
  margin-bottom: 7px;
}

.math-step {
  background-color: #dde0ea;
  padding: 6px;
  margin-bottom: 15px;
  margin-top: 5px;
  border-radius: 5px;
  display: block;
}

.math-error-message-container h4 {
  margin-top: 0px;
}

.container {
  margin: auto;
  width: 880px;
  padding: 10px;
}

.solver-prompt {
  margin-bottom: 15px;
}

.btn {
    background-color: #909090;
    border: none;
    color: white;
    padding: 8px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin-left: 8px;
    border-radius: 4px;
}

.btn:hover {
  background-color: #626262;
}

.btn-primary {
  background-color: #0078e7;
}

.btn-primary:hover {
  background-color: #0261b9;
}

.btn-success {
  background-color: #1ca520;
}

.btn-success:hover {
  background-color: #147717;
}

.math-input {
  border-radius: 2px;
}

.incomplete-distribution-graphic {
  border-collapse: collapse;
}

.incomplete-distribution-graphic-box {
  border: solid;
  text-align: center;
  border-width: 2px;
  border-color: black;
  margin: 0px;
  padding: 0px;
}

.incomplete-distribution-graphic-row-text {
  text-align: center;
  padding-right: 5px;
}

.incomplete-distribution-graphic-col-text {
  text-align: center;
}

.incomplete-distribution-graphic-element {
  height: 100%;
}

.incomplete-distribution-box-text-container {
  text-align: center;
  vertical-align: middle;
  display: table-cell;
  padding: 0px;
  margin: 0px;
  border: 0px;
}

.math-step-example-list {
  list-style-type: none;
  padding-left: 0px;
  margin-left: 0px;
  padding-bottom: 5px;
}

.min-math-step-example-list {
  list-style-type: none;
  padding-left: 15px;
  margin-left: 0px;
  margin-top: 8px;
  padding-top: 0px;
  margin-bottom: 8px;
  padding-bottom: 0px;
}

.red-color {
  color: red;
}

.blue-color {
  color: blue;
}

.singlecross {
    position: relative;
    padding: 30px;
    overflow: hidden; /* hide overflow of pseudo elements */
}

.singlecross:before {
  position: absolute;
  background: rgba(255, 0, 0, 0.8);
  height: 2px;
  content: '';
  left: 0;
  top: 45%;
  right: 0;
  -webkit-transform: skewY(20deg);
  -moz-transform: skewY(20deg);
  transform: skewY(20deg);
}

.doublecross {
  position: relative;
  padding: 30px;
  overflow: hidden; /* hide overflow of pseudo elements */
}

.doublecross:before {
  position: absolute;
  background: rgba(255, 0, 0, 0.7);
  height: 2px;
  content: '';
  left: 0;
  top: 45%;
  right: 0;
  -webkit-transform: skewY(20deg);
  -moz-transform: skewY(20deg);
  transform: skewY(20deg);
}

.doublecross:after {
  position: absolute;
  background: rgba(255, 0, 0, 0.7);
  height: 2px;
  content: '';
  left: 0;
  top: 45%;
  right: 0;
  -webkit-transform: skewY(-20deg);
  -moz-transform: skewY(-20deg);
  transform: skewY(-20deg);
}