html {
  height: 100%;
  box-sizing: border-box;
}
*, *:before, *:after {
  box-sizing: inherit;
}

body {
    font-family: arial;
    margin: 0;
    padding: 0;
    background-color: #5D5C5C;
    height: 100%;
    user-select: none;
    overflow: hidden;
}

btn {
    border: 2px solid black;
    border-radius: 30px;
    padding: 0 40px 0 40px;
    background-color: #C3C8C9;
    font-size: 28px;
    margin: 6px;
    padding: 6px 30px;
    cursor: pointer;
    text-align: center;
}

btn:active {
    background-color: #D7DCDD;
}

.left {
    text-align: left;
}

.right {
  float: right;
  text-align: right;
}


#container {
    position: relative;
    width: 480px;
    height: 100%;
    max-height:853px;
    margin-left: auto;
    margin-right: auto;
    background-color: #282828;
}

#canvas {
    border: 0px none;
    outline: none;
    padding: 0;
    margin-left: auto;
    margin-right: auto;
    display: block;
    width: 100%;
    height: 100%;
}

#ad {
    position: absolute;
    padding: 0;
    margin: 0;
    width: 480px;
    overflow: hidden;
}

#title {
    position: absolute;
    left:0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#title header {
    flex:1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#title content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#title btn {
    width: 200px;
}

#title footer {
    line-height: 50px;
    font-size: 16px;
    text-shadow: 0px 0px 5px #000;
}

#title footer a {
    color: white;
    text-decoration: none;
}

#settings_window {
    height: 450px;
}

#settings_window content {
    padding: 25px 95px;
    font-size: 26px;
    display: flex;
    flex-direction: column;
}

#settings_window content div {
  margin: 10px;
}

#error {
	height: 50%;
}

#error content {
 padding: 40px;
}

.mask {
  position: fixed;
  background-color: rgba(0, 0, 0, 0.5);
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}

img {
  max-width: 100%;
  height: auto;
}
figure {
  margin: 0;
  padding: 10px;
}
figure a {
  display: block;
}
mark {
  padding: 0 5px;
  background-color: #ddd;
}
::backdrop {
  background-color: rgba(0, 0, 0, 0.5);
}
.btn {
  padding: 10px 45px;
  cursor: pointer;
  color: #555;
  border-width: 1px;
  border-style: solid;
  border-radius: 3px;
  background-color: #f3f3f3;
}
.btn.disabled {
  cursor: not-allowed;
  color: #ddd;
  border-color: #ddd;
}
.btn-group {
  padding: 15px 20px;
  text-align: right;
  background-color: #f5f6f8;
}
.btn-primary {
  color: #fff;
  border-color: #0066c0;
  background-color: #0074d9;
}
.btn-primary:hover {
  background-color: #0066c0;
}
.btn-danger {
  color: #fff;
  font-size: 24px;
  border-color: #ab3326;
  margin: 8px;
  background-color: #c0392b;
}

.start-btn{
    width: 210px
}

.setting-btn{
    font-size: 18px;
    margin: 8px;
    width: 200px;
}

.btn-danger:hover {
  background-color: #ab3326;
}
.btn-cancel {
  color: #999;
  border-color: #ddd;
}
.btn-cancel:hover {
  background-color: #e6e6e6;
}
.window {
    position: absolute;
    left: 30px;
    top: 30px;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    font-size: 32px;
    font-family: 黑体;
    width: 416px;
    margin: auto;
    background-color: #fff;
    border-width: 0;
    border-radius: 5px;
    box-shadow: 0 10px 20px 0 rgba(0, 0, 0, 0.3);
    -webkit-tap-highlight-color: rgba(0,0,0,0);
}

.window header {
    position: relative;
    padding: 8px;
    text-align: center;
    padding: 12px 20px;
    background-color: #434a54;
    color: white;
}

.window content {
    position: relative;
    background-color: #FFF;
    flex: 1;
    font-size: 22px;
    height: 60%;
}

.window footer {
    position: relative;
    padding: 10px;
    background-color: #f5f6f8;
    text-align: center;
    vertical-align: middle;
}

/**
 * Checkbox Four
 */
.checkboxFour {
    width: 40px;
    height: 40px;
    background: #ddd;
    margin: 20px 90px;
 
    border-radius: 100%;
    position: relative;
    -webkit-box-shadow: 0px 1px 3px rgba(0,0,0,0.5);
    -moz-box-shadow: 0px 1px 3px rgba(0,0,0,0.5);
    box-shadow: 0px 1px 3px rgba(0,0,0,0.5);
    float: left;
}

.checkboxFour input{
    display: none;
}

.checkboxFourFront{
    padding-top: 5px;
}

/**
 * Create the checkbox button
 */
.checkboxFour label {
    display: block;
    width: 30px;
    height: 30px;
    border-radius: 100px;
 
    -webkit-transition: all .5s ease;
    -moz-transition: all .5s ease;
    -o-transition: all .5s ease;
    -ms-transition: all .5s ease;
    transition: all .5s ease;
    cursor: pointer;
    position: absolute;
    top: 5px;
    left: 5px;
    z-index: 1;
 
    background: #333;
 
    -webkit-box-shadow:inset 0px 1px 3px rgba(0,0,0,0.5);
    -moz-box-shadow:inset 0px 1px 3px rgba(0,0,0,0.5);
    box-shadow:inset 0px 1px 3px rgba(0,0,0,0.5);
}

/**
 * Create the checked state
 */
.checkboxFour input[type=checkbox]:checked + label {
    background: #26ca28;
}


.close {
  position: absolute;
  width: 58px;
  height: 54px;
  background:#434a54;
  opacity:0.5;
  display:inline-block;
  top: 3px;
  right: 3px;
}
.close:hover{
	cursor:pointer;
	opacity:1;
}
.close::before, .close::after {
  content: '';
  position: absolute;
  width: 80%;
  top: 50%;
  left: 10%;
  height: 12px;
  margin-top: -6px;
  border-radius: 5px;
  background: #ffffff;
}
.close::before {
  transform: rotate(45deg);
}
.close::after {
  transform: rotate(-45deg);
}