.center {
  padding-left: 0;
  padding-right: 0;
  margin-left: auto;
  margin-right: auto;
  display: block;
}

.diagram3d {
  width: 80%;
}
@media (max-width: 575px) {
  .diagram3d {
    width: 100%;
  }
}
.diagram3d {
  height: auto;
  padding-left: 0;
  padding-right: 0;
  margin-left: auto;
  margin-right: auto;
  display: block;
}

.slidertable {
  width: 55%;
}
@media (max-width: 575px) {
  .slidertable {
    width: 90%;
  }
}
.slidertable {
  padding: 0;
  margin-left: auto;
  margin-right: auto;
}
.slidertable button.l {
  float: right;
}
.slidertable button.r {
  float: left;
}
.slidertable .MathJax {
  margin: 0;
}
.slidertable tr,
.slidertable td {
  background-color: #ffffff;
  border: none;
}
.slidertable .slider {
  width: 95%;
}

.slider {
  -webkit-appearance: none;
  height: 15px;
  border-radius: 5px;
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  display: block;
  padding-left: 0;
  padding-right: 0;
  margin-left: auto;
  margin-right: auto;
  -webkit-transition: 0.2s;
  transition: opacity 0.2s;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: #04AA6D;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: #04AA6D;
  cursor: pointer;
}

button {
  font-family: sans-serif;
  font-size: medium;
}

.mathtable {
  width: 80%;
}
@media (max-width: 575px) {
  .mathtable {
    width: 100%;
  }
}
.mathtable {
  margin-left: auto;
  margin-right: auto;
}
.mathtable tr,
.mathtable td,
.mathtable tbody {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
  background-color: #ffffff;
  border: none;
}
.mathtable tbody {
  width: 100%;
}
.mathtable td {
  display: inline-block;
}

table {
  padding: 0;
}

table tr {
  border-top: 1px solid #cccccc;
  background-color: white;
  margin: 0;
  padding: 0;
}

table tr:nth-child(2n) {
  background-color: #f8f8f8;
}

table tr th {
  font-weight: bold;
  border: 1px solid #cccccc;
  text-align: left;
  margin: 0;
  padding: 6px 13px;
}

table tr td {
  border: 1px solid #cccccc;
  text-align: left;
  margin: 0;
  padding: 6px 13px;
}

table tr th :first-child,
table tr td :first-child {
  margin-top: 0;
}

table tr th :last-child,
table tr td :last-child {
  margin-bottom: 0;
}

.diagram2d {
  width: 50%;
}
@media (max-width: 575px) {
  .diagram2d {
    width: 75%;
  }
}