body {
        margin: 0;
        padding: 0;
      }

.instructionNumber{
  width:12%;
  display: inline-block;
  /*width: 3em;*/
  height: 1em;
}

#reset{
  color:red;
  display: none;
}

code{
  text-align: left;
}

#mycode {
  text-align: left;
}

#play_button {
  float: left;
  
  /*box-sizing: border-box;*/
}

#step_button {
  float: right;
  
  /*box-sizing: border-box;*/
}

#stop_button {
  float: left;
  
  /*box-sizing: border-box;*/
}

#restart_button {
  float: right;
  
  /*box-sizing: border-box;*/
}

.button {
  text-align: center;
  /*border-radius: 1%;*/
  width: 45%;
  background-color: #aaa;
  cursor: pointer;
  box-sizing: border-box;
}

div .button { margin:2%; }

#controls {
  margin-top: 5px;
  margin-bottom: 5px;
  box-sizing: border-box;
  height: auto;
  width: auto;
}

#control_left {
  box-sizing: border-box;
  height: auto;
  width: auto;
}

#control_right {
  box-sizing: border-box;
  height: auto;
  width: auto;
}

a {
  color:#fff;
}

a:visited{
  color:#ddd;
}

.register_number{
  width:12%;
  display: inline-block;
  /*width: 3em;*/
  height: 1em;
}

.instructionType{
  display: inline-block;
  width:18%;
  margin-right: 1em;
}

.instruction{
    /*display: inline-block;*/
    width: 100%;
    /*padding-top : 1em;
  padding-bottom: 1em;
  padding-left: 1em;*/
    /*background-color:#00ff00;*/
    font-family:courier;
    font-weight:bold;
    /*color:#000000;
    text-align:center;*/

  margin-right: auto;
  margin-left: auto;
  border-right: 2px solid #000000;
  border-left:  2px solid #000000;
  border-bottom:  2px solid #000000;
  display: inline-block;
}

.top_instruction{
  border-top: 2px solid #000;
}

.reg{
  display: inline-block;
  width:18%;
  box-sizing: border-box;
}

input{
  box-sizing: border-box;
}

#sectionwithcoderunbuttons div img {
  width: 30%;
  margin: 1%;
  box-sizing: border-box;
  border-radius: 50% 50%;
  box-shadow: black 0px 0px 5px;
}

#head_opacity {


}

#head_in{
  background: black;
  filter: alpha(opacity=20);
  opacity: 0.2;
}

#head_black_back{
   background-image: url(2014-07-05%2020.29.15half.jpg) ;

        background-size: cover;
}

.register {
    /*display: inline-block;*/
    width: 100%;
    /*padding-top : 1em;
  padding-bottom: 1em;
  padding-left: 1em;*/
    /*background-color:#00ff00;*/
    font-family:courier;
    font-weight:bold;
    /*color:#000000;
    text-align:center;*/

  margin-right: auto;
  margin-left: auto;
  border-right: 2px solid #000000;
  border-left:  2px solid #000000;
  border-bottom:  2px solid #000000;
  display: inline-block;
}

.top_register{
  border-top: 2px solid #000;
}


      #headline {
        padding: 0.8em;
        color: white;
        font-family: Roboto, helvetica, arial, sans-serif;
        background-color: rgba(0, 0, 0, 0.7);
        //background: black;
       
      }

      #headline h1 {
        font-weight: 200;
        font-size: 60px;
        line-height: 1em;
        margin-bottom: 0;
      }

      #headline h2 {
        font-weight: 200;
        font-size: 30px;
        margin-top: 5px;
      }

      #headline #blurb {
        font-weight: 200;
        font-size: 18px;
      }

      #headline #register {
        background-color: #39b1a4;
        background-color: rgba(57,177, 164, 0.7);
        padding: 1em;
      }

      #headline #register h2 {
        font-weight: 100;
        padding: 0;
        margin: 0;
      }

      #headline #register label {
        font-size: 1.2em;
        font-weight: 200;
        padding-top: 12px;
        display: block;
      }

      #headline #register input {
        width: 100%;
        font-size: 18px;
        font-weight: 200;
        padding: 10px;
        box-sizing: border-box;
      }

      #headline #register input[type=submit] {
        background-color: hsl(8, 70%, 54%);
        color: white;
        margin-top: 20px;
        padding: 10px;
        border: none;
        box-sizing: border-box;
        font-size: 18px;
      }

      #section1, #section2, #section3 {
        box-sizing: border-box;
        padding: 20px;
      }

      #section1 h2, #section2 h2, #section3 h2  {
        margin-top: 0;
        font-size: 24px
      }

      #section1 {
        background-color: white;
        font-family: Roboto, sans-serif;
        font-weight: 100;
        font-size: 18px;
      }
      
      .instructionNumber{
        font-size: 15px;
      }

      #section1 h2 {
        font-weight: 300;
        text-align: center;
        margin-bottom: 0px;
        margin-top: 20px;
      }

      #section1 h2 + p {
      }

      #section1 video {
        width: 100%;
      }

      #section2 {
        background-color: #e9e9e9;
        font-family: Roboto, sans-serif;
        font-weight: 100;
        font-size: 18px;
      }

      #section2 h2 {
        font-weight: 300;
        text-align: center;
        margin-bottom: 0px;
        margin-top: 20px;
      }

      #section2 h2 + p {
        text-align: center;
      }

      #section2 div {
        text-align: center;
      }

      #section2 div img {
        width: 100%
      }

      #section3 {
        background-color: #f5f5f5;
        font-family: Roboto, sans-serif;
        font-weight: 100;
        text-align: center;
        margin: auto;
      }

      #section3 h2 {
        font-weight: 300;
        text-align: center;
        margin-bottom: 0px;
        margin-top: 20px;
      }

      #section3 h2 + p {
        text-align: center;
      }

      #section3 figure {
        text-align: center;
      }

      #section3 figure figcaption {
        text-align: center;
        font-weight: 400;
      }

      #footer {
        font-family: Roboto, sans-serif;
        font-weight: 300;
        text-align: center;
        background-color: hsl(8, 70%, 54%);
        color: white;
        padding-bottom: 20px;
        padding-top: 20px;
      }

      table {
        margin-top: 26px;
        width: 100%;
      }
      thead {
        font-weight: bold;
      }

      tbody {
        text-align: center;
      }


@media screen and (max-width: 600px) {
        table thead {
          display: none;
        }

        table td {
          display: block;
          position: relative;
          padding-left: 50%;
          padding-top: 13px;
          padding-bottom: 13px;
          text-align: left;
          background: #e9e9e9;
        }

        table td:before {
          content: attr(data-th) " :";
          display: inline-block;
          color: #000000;
          background: #e9e9e9;
          border-right: 2px solid transparent;
          position: absolute;
          top: 0;
          left: 0;
          bottom: 0;
          width: 33%;
          max-height: 100%;

          font-size: 16px;
          font-weight: 300;
          padding-left: 13px;
          padding-top: 13px;
        }


      }

@media screen and (min-width: 600px) {

  #control_left {
    float: left;
    width: 50%;
    /*box-sizing: border-box;*/
  }
  
  #control_right {
    float: right;
    width: 50%;
    /*box-sizing: border-box;*/
  }
    
  .instruction {
    max-width: 16em !important;
    display: inline-block;
    font-size: 15px;
  }


          #headline {
            padding: 20px 5%;
          }

          .container {
            margin: auto;
            max-width: 800px;
          }

          #section1 #code {
            float: left;
            font-weight: 200;
           width: 50%;
            font-size: 18px;
            box-sizing: border-box;
            padding-right: 10px;
          }
  
          

          #headline br {
            clear: both;
          }

          #section1 #registers {
            float:right;
            padding: 20px;
            width: 50%;
            box-sizing: border-box;
            font-weight: 300;
          }

          #section1 #section2, #section3 {
            box-sizing: border-box;
            padding: 10px 20% 80px 20%;
          }

          #section1 h2, #section2 h2, #section3 h2  {
            margin-top: 0;
            font-size: 60px
          }

          #section1 ul {
            box-sizing: border-box;
            float: left;
            width: 50%;
            padding-right: 1em;
          }

          #section1 video {
            box-sizing: border-box;
            width: 50%;
            float: right;
          }

          #section1 br {
            clear: both;
          }
  
          #code br {
            clear: both;
          }

          #section2 div img {
            width: 30%;
            margin: 1%;
            box-sizing: border-box;
            border-radius: 50% 50%;
            box-shadow: black 0px 0px 5px;
          }
        }