/*
reset style
*/
html {
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  height: 100%;
  font-family:  TimesNewRoman, "Times New Roman", Times,  sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', "Lucida Sans", 'Helvetica Neue';
}

* {
	padding:0.1rem 0.2rem 0.1rem 0.2rem;
	
  box-sizing: border-box;
}
.center {
 margin: 0 auto;
 width: 100%;
  display: flex;
  justify-content: center;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  border: 1px solid #888888;
}

th, td {
   padding: 0.2rem;
}

tr:nth-child(even){background-color: #f2f2f2}

.dropbtn {
  background-color: #4CAF50;
  color: white;
  padding: 1.5rem;
  font-size: 1.5rem;
  border: none;
  cursor: pointer;
}

video {
  width: 100%;
  height: auto;
}
.dropbtn {
  background-color: #4CAF50;
  color: white;
  padding: 1.5rem;
  font-size: 1.5rem;
  border: none;
  cursor: pointer;
}

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  background-color: #f9f9f9;
  min-width: 5rem;
  width:auto;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  color: black;
  padding: 1rem 1.5rem;
  text-decoration: none;
  display: block;
}

.dropdown-content a:hover {background-color: #f1f1f1;}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown:hover .dropbtn {
  background-color: #3e8e41;
}
.row {
  padding: 0.1rem;
	margin: 0.1rem;
}
.row::after {
  content: "";
  clear: both;
  display: table;
}
.basic {
  padding: 0;
	margin: 0.2rem;
}
.mychoice{
  font-size : 1.5rem; 
	margin: 1.0rem 1.0rem 1.0rem 3.0rem;
	padding: 1.0rem 0rem 1.0rem 0rem;
	position: relative;
}
p, h2,h3,h4 {
  padding: 0;
	margin: 0.2rem;
}
hr {
  padding: 0;
margin: 0.5rem 0.0rem 0.6rem 0.0rem;
}
ul {
  padding: 0;
	margin: 0.5rem 1.5rem 0.5rem 1.5rem;
}
ol {
  padding: 0;
	margin: 0.5rem 1.5rem 0.5rem 1.5rem;
}
li {
  padding: 0.2rem 0rem 0.2rem 0rem;
	margin: 0;
}
[class*="col-"] {
  float: left;
  padding: 0.2rem;
}


.header {
  background-color: #0000cc;
  color: #ffffff;
  padding: 0.5rem;
	margin: 0.5rem;
  text-align: center;
}

.menu ul {
  list-style-type: none;
  padding: 0.2rem;
	margin: 0.2rem;
  text-align: center;
}

.menu li {
  padding: 8px;
  margin-bottom: 7px;
  background-color: #65b054;
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  text-align: center;
}

.menu li:hover {
  background-color: #0099cc;
}

.aside {
  background-color: #83d5f5;
  padding: 0.3rem 0.5rem 0.3rem 0.5rem;
	margin: 0.3rem 0.5rem 0.3rem 0.5rem;
  color: black;
  text-align: left;
  font-size: 1.0rem;
}
.bside {
  background-color: white;
  padding:  0.5rem 0.3rem 0.5rem 0.3rem;
	margin: 0.0rem 0.3rem 0.0rem 0.3rem;
  color: blue;
  text-align: left;
  font-size: 1.0rem;
}
.cside {
  background-color: white;
  padding: 0.4rem 0.4rem 0.4rem 1.0rem;
	margin: 0;
  color: black;
  text-align: left;
  font-size: 1.0rem;
}
.dside {
  background-color: #eeeeee;
  color: black;
  text-align: justify;
  font-size: 1.0rem;
  padding:  0.4rem 0.4rem 0.4rem 1.0rem;
	margin: 0;
}
.figureside {
  background-color: white;
  padding: 0rem 0rem 1.0rem 0rem;
	margin: 0.5rem 1.0rem 0.5rem 1.0rem;
  color: black;
  text-align: center;
  font-size: 1.0rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}
.main {
  background-color: white;
  color: black;
  text-align: justify;
  font-size: 1.0rem;
  padding:  0.5rem 0.3rem 0.5rem 0.3rem;
	margin: 0.5rem 0.3rem 0.5rem 0.3rem;

}
.bottom {
  background-color: #eeeeee;
  color: black;
  text-align: justify;
  font-size: 1.0rem;
  padding:  0.3rem 0.2rem 0.2rem 0.2rem;
	margin: 0.3rem 0.2rem 0.2rem 0.2rem;
}
.footer {
  background-color: #ffffff;
  color: black;
  text-align: justify;
  font-size: 1.0rem;
  padding:  0.3rem 0.2rem 0.2rem 0.2rem;
	margin: 0.3rem 0.2rem 0.2rem 0.2rem;
 
}

/* For mobile phones: */
[class*="col-"] {
  width: 100%;

}

@media only screen and (min-width: 720px) {
  /* For tablets: */
  html {margin 1.0rem 1.0rem 1.0rem 1.0rem;} 
  .col-s-1 {width: 8.33%;}
  .col-s-2 {width: 16.66%;}
  .col-s-3 {width: 23.0%;}
  .col-s-4 {width: 33.0%;}
  .col-s-5 {width: 41.66%;}
  .col-s-6 {width: 49.0%;}
  .col-s-7 {width: 58.33%;}
  .col-s-8 {width: 66.66%;}
  .col-s-9 {width: 72%;}
  .col-s-10 {width: 83.33%;}
  .col-s-11 {width: 91.66%;}
  .col-s-12 {width: 100%;}
}
@media only screen and (min-width: 1024px) {
  /* For desktop: */
  html {margin 1.0rem 3.0rem 1.0rem 3.0rem;} 
  .col-1 {width: 8.33%;}
  .col-2 {width: 16.66%;}
  .col-3 {width: 23.0%;}
  .col-4 {width: 33.0%;}
  .col-5 {width: 41.66%;}
  .col-6 {width: 49.0%;}
  .col-7 {width: 58.33%;}
  .col-8 {width: 66.66%;}
  .col-9 {width: 72%;}
  .col-10 {width: 83.33%;}
  .col-11 {width: 91.66%;}
  .col-12 {width: 100%;}
}
a img {
  border: 0;
}
a {
  text-decoration: none;
  color: blue;
}
a:active,
a:focus {
  background-color: transparent;
}
a:active,
a:focus,
input:active,
input:focus,
button:active,
button:focus {
  outline: none;
}

body {
  line-height: 1.0;
  height: 100%;
}

/*
default font family
*/

input::-webkit-input-placeholder, textarea::-webkit-input-placeholder { /* WebKit*/
  color:    #65b054;
  opacity: 0.7;
}
input:-moz-placeholder, textarea:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
  color:    #65b054;
  opacity: 0.7;
}
input::-moz-placeholder, textarea::-moz-placeholder { /* Mozilla Firefox 19+ */
  color:    #65b054;
  opacity: 0.7;
}
input:-ms-input-placeholder, textarea:-ms-input-placeholder { /* IE 10+ */
  color:    #65b054;
  opacity: 0.7;
}



/*
  elements default style
*/

.title-box{
  height: 10rem;
  display: flex;
  text-align: center;
}

.title-box h1{
  font-size: 4rem;
  font-weight: bold;
  margin: 0 auto;
  align-self: center;
}

.button-box{
  z-index: 999;
  position: absolute;
  width: 100%;
  bottom: 5rem;
  text-align: center;
}
.button-box button4:hover {
  background-color: #0099cc;
}
.button-box button3:hover {
  background-color: #0099cc;
}
.button-box button2:hover {
  background-color: #0099cc;
}
.button-box button:hover {
  background-color: #0099cc;
}
.button-box button:disabled {
  background-color: #dddddd;
}
.button-box button2:disabled {
  background-color: #dddddd;
}
.button-box button3:disabled {
  background-color: #dddddd;
}
.button-box button4:disabled {
  background-color: #dddddd;
}
.button-box button{
  background-color: #65b054;
  display: block;
  font-size: 2rem;
  text-align: center;
  font-weight: bold;
  color: #ffffff;
  height: auto;
  min-height: 4rem;
  margin: 10px auto;
  border-radius: 6rem;
  border-width: 0px;
  width: auto;
  min-width: 10rem;
  -moz-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	-webkit-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
}
.button-box button2{
  background-color: #65b054;
  display: block;
  font-size: 2rem;
  text-align: center;
  font-weight: bold;
  color: #ffffff;
  height: auto;
  min-height: 4rem;
  margin: 10px auto;
  border-radius: 6rem;
  border-width: 0px;
  width: auto;
  min-width: 15rem;
  -moz-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	-webkit-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
}

.button-box button3{
  background-color: #65b054;
  display: block;
  font-size: 2rem;
  text-align: center;
  font-weight: bold;
  color: #ffffff;
  height: auto;
  min-height: 3rem;
  margin: 0.2rem auto;
  border-radius: 4rem;
  border-width: 0px;
  width: auto;
  min-width: 10rem;
  -moz-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	-webkit-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
}
.button-box button4{
  background-color: #65b054;
  display: block;
  font-size: 1.2rem;
  text-align: center;
  font-weight: bold;
  color: #ffffff;
  height: auto;
  min-height: 1.0rem;
  margin: 0.2rem auto;
  border-radius: 3rem;
  border-width: 0px;
  width: auto;
  min-width: 2rem;
  -moz-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	-webkit-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
}
.input-border{
  min-height: 1.5rem;
  width: auto;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: auto;
  border-width: 0rem;
  text-align: left;
}

.input-box{
  font-size : 2rem; 
  border-radius: 4rem;
  background-color: #def0d9;
  box-shadow: 0px;
  border-width: 0rem;
  height: auto;
  width: auto;
  color: #65b054;
  text-align: center;
}

.sub-title-box{
  height: auto;
  font-size: 2rem;
  width: 80%;
  margin: 0 auto;
  text-align: center;
}


.text-box{
  height: 40%;
  width: 90%;
  font-size: 3rem;
  margin: 0 auto;
}


/*
  video
*/
.video-box{
  width: 100%;
  height:100%;
}

.video-box video{
  width: 100%;
  height:100%; 
}


/*
  quiz
*/
.quiz-title-box{
  height: 4rem;
  display: flex;
  font-weight: bold;
  text-align: left;
}

.quiz-title-box h1{
  font-size: 2rem;
  margin-left: 2rem;
  align-self: center;
}

.quiz-button-box{
  position: static;
  width: 100%;
  bottom: 2.0rem;
  text-align: center;
}

.quiz-button-box button{
  background-color: #65b054;
  font-size: 2.0rem;
  text-align: center;
  font-weight: bold;
  color: #ffffff;
  height: auto;
  margin: 10px auto;
  border-radius: 5rem;
  border-width: 0px;
  width: 80%;
  -moz-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	-webkit-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
}

.quiz-text-box {
  height: auto;
  width: 80%;
  font-size: 1.0rem;
	margin: 0 auto;
	padding: 2rem;
	background-color: #ffffc7;
	
	-moz-border-radius-bottomleft: 20px 500px;
	-moz-border-radius-bottomright: 500px 30px;
	-moz-border-radius-topright: 5px 100px;	
	
	-webkit-border-bottom-left-radius: 20px 500px;
	-webkit-border-bottom-right-radius: 500px 30px;
	-webkit-border-top-right-radius: 5px 100px;
	
	border-bottom-left-radius: 20px 500px;
	border-bottom-right-radius: 500px 30px;
	border-top-right-radius: 5px 100px;
	
	background: 
		-moz-repeating-linear-gradient(
			top,
			#ffffc7,
			#ffffc7 28px,
			#81cbbc 30px
		);
	
	background: 
		-webkit-gradient(
			linear,
			left top, left bottom,
			from(#81cbbc),
			color-stop(2%, #ffffc7)
		);
		
	background: 
		repeating-linear-gradient(
			top,
			#ffffc7,
			#ffffc7 28px,
			#81cbbc 30px
		);		
		
	background-size: 100% 30px;

	-moz-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	-webkit-box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	box-shadow: 0 2px 10px 1px rgba(0, 0, 0, 0.2);
	
	text-shadow: 0 1px 0 #F6EF97;
	position: relative;
}

.quiz-sender{
  height: 2rem;
  font-size: 1.2rem;
  color:#65b054;
  margin-left: 3rem;
}

.quiz-sendtime{
  height:2rem;
  font-size: 1.2rem;
  color: black;
  font-style: oblique;
  margin-right: 3rem;
  float: right;
}

.quiz-receiver{
  font-size: 1.2rem;
  color: #666666;
  margin-left: 3rem;
}

/*experiment*/
.instruction{
  font-size: 2rem;
  color: #65b054;
  	  height: auto;
	  min-height:3rem;
  text-align: center;
  margin: 0 auto;
  width: 90%;
}