* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #fff;
  color: #333;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 34px;
  line-height: 1.45;
}

button {
  font: inherit;
}

.learnstones-loading,
.learnstones-error {
  padding: 24px;
}

.ls_menu {
  top: 0;
  left: 0;
  width: 100%;
  position: fixed;
  z-index: 10;
  background-color: transparent;
}

.learnstones-menu-inner {
  width: 100%;
}

.ls_stones {
  border: 2px solid #a1a1a1;
  padding: 5px;
  border-radius: 10px;
  background-color: #dddddd;
  margin: 10px;
  height: 124px;
  overflow: hidden;
  box-shadow: 0 -10px 0 10px #fff;
}

.ls_stones table {
  border: 0;
  width: auto;
  border-collapse: collapse;
}

.ls_stones td {
  border: 0;
  text-align: center;
  margin: 0;
  padding: 0 0 0 4px;
  vertical-align: top;
}

.ls_stones td.ls_rotated {
  height: 80px;
  width: 100px;
}

.ls_stones td.ls_rotated > div {
  height: 80px;
  width: 100px;
}

.ls_menu_input {
  display: block;
  border: none;
  background-image: none;
  background-color: transparent;
  cursor: pointer;
  color: #21759b;
  box-shadow: none;
  white-space: normal;
  hyphens: none;
  padding: 0;
}

.ls_menu_input:hover,
.ls_menu_input:focus {
  border: none;
  background-image: none;
  background-color: transparent;
  cursor: pointer;
  color: #21759b;
  box-shadow: none;
  white-space: normal;
  text-decoration: underline;
  hyphens: none;
  padding: 0;
}

.ls_menu_input_align {
  text-align: center;
  font-size: medium;
  line-height: normal;
  width: 100px;
  vertical-align: top;
}

.ls_menuimg,
.ls_menuimg:hover,
.ls_menuimg:focus {
  display: inline-block;
  background-image: url("lsimg.png");
  background-position: 0 0;
  background-repeat: no-repeat;
  background-color: transparent;
  border: 0;
  width: 64px;
  height: 64px;
  color: #fff;
  font-weight: 600;
  font-size: 24px;
  padding: 0;
  box-shadow: none;
  cursor: pointer;
}

.ls_menu0,
.ls_menu0:hover,
.ls_menu0:focus {
  background-position: 0 0;
}

.ls_menu1,
.ls_menu1:hover,
.ls_menu1:focus {
  background-position: -64px 0;
}

.ls_menu2,
.ls_menu2:hover,
.ls_menu2:focus {
  background-position: -128px 0;
}

.ls_menu3,
.ls_menu3:hover,
.ls_menu3:focus {
  background-position: -192px 0;
}

.ls_menu4,
.ls_menu4:hover,
.ls_menu4:focus {
  background-position: -173px -96px;
}

.ls_menu_active,
.ls_menu_active:hover,
.ls_menu_active:focus {
  box-shadow: 0 0 5px 5px #ffffa3;
  border-radius: 50%;
  background-color: #ffffa3;
}

.learnstones-stage {
  margin: 224px 0 0;
  width: 100%;
}

.learnstones-slide {
  display: none;
}

.learnstones-slide.is-active {
  display: block;
}

.learnstones-content {
  width: 100%;
  margin: 0;
  padding: 0 8px 20px;
  background-color: #fff;
}

.learnstones-content h1 {
  margin: 0 0 34px;
  color: #09f;
  font-size: 52px;
  line-height: 1.2;
}

.learnstones-content h2 {
  margin: 28px 0 16px;
  font-size: 34px;
  line-height: 1.2;
}

.learnstones-content h3 {
  margin: 24px 0 12px;
  font-size: 30px;
  line-height: 1.2;
}

.learnstones-content h4 {
  margin: 22px 0 10px;
  font-size: 26px;
  line-height: 1.25;
}

.learnstones-content p,
.learnstones-content ul,
.learnstones-content ol,
.learnstones-content blockquote,
.learnstones-content pre {
  margin-top: 0;
  margin-bottom: 28px;
}

.learnstones-content ul,
.learnstones-content ol {
  padding-left: 50px;
}

.learnstones-content a {
  color: #21759b;
}

.learnstones-content img {
  max-width: 100%;
  height: auto;
}

.learnstones-content input[type="text"],
.learnstones-content input:not([type]) {
  min-width: min(40ch, 100%);
  max-width: 100%;
  padding: 6px 10px;
  border: 2px solid #a1a1a1;
  border-radius: 5px;
  background: #fff;
  color: #333;
  font: 0.7em Consolas, Monaco, "Courier New", monospace;
}

.learnstones-content input[type="text"]:focus,
.learnstones-content input:not([type]):focus {
  border-color: #09f;
  outline: 2px solid rgba(0, 153, 255, 0.25);
  outline-offset: 1px;
}

.learnstones-content blockquote {
  margin-left: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.learnstones-content code {
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 0.9em;
}

.learnstones-content :not(pre) > code {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid #b87333;
  border-left-width: 10px;
  background: #fffaf0;
}

.learnstones-content pre {
  overflow-x: auto;
  padding: 12px;
  border: 1px solid #d0d0d0;
  background: #f7f7f7;
  cursor: default;
  -webkit-user-select: none;
  user-select: none;
}

.ls_lights {
  list-style-type: none;
  margin: 10px 20px 10px 18px;
  border: 2px solid #a1a1a1;
  padding: 3px;
  border-radius: 10px;
  background-color: #dddddd;
}

.ls_lights li {
  display: flex;
  align-items: center;
  height: 32px;
  margin: 0;
  padding: 0;
  line-height: 32px;
}

.ls_lightsa {
  background-image: none;
  border: none;
  background-color: transparent;
  cursor: pointer;
  color: #21759b;
  box-shadow: none;
  padding: 0 0 0 5px;
  font-size: 24px;
  line-height: 32px;
}

.ls_lightsa:hover,
.ls_lightsa:focus {
  background-image: none;
  border: none;
  background-color: transparent;
  cursor: pointer;
  color: #21759b;
  box-shadow: none;
  text-decoration: underline;
}

.ls_lightsspan,
.ls_lightsspan:hover,
.ls_lightsspan:focus {
  background-image: url("lsimg.png");
  background-position: 0 0;
  background-repeat: no-repeat;
  background-color: transparent;
  display: block;
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  padding: 0;
  border: none;
  box-shadow: none;
  cursor: pointer;
}

.ls_lightsl1,
.ls_lightsl1:hover,
.ls_lightsl1:focus {
  background-position: 0 -96px;
}

.ls_lightsl2,
.ls_lightsl2:hover,
.ls_lightsl2:focus {
  background-position: 0 -128px;
}

.ls_lightsl3,
.ls_lightsl3:hover,
.ls_lightsl3:focus {
  background-position: 0 -160px;
}

@media (max-width: 1100px) {
  body {
    font-size: 24px;
  }

  .learnstones-content h1 {
    font-size: 42px;
  }
}