@font-face {
  font-family: 'myriadpro';
	src: url('../fonts/myriadpro/myriadpro_regular.eot');
	src: url('../fonts/myriadpro/myriadpro_regular.eot?#iefix') format('embedded-opentype'),
		url('../fonts/myriadpro/myriadpro_regular.otf') format('opentype'),
		url('../fonts/myriadpro/myriadpro_regular.woff') format('woff'),
		url('../fonts/myriadpro/myriadpro_regular.ttf') format('truetype'),
		url('../fonts/myriadpro/myriadpro_regular.svg#ArialMT') format('svg');
}
body {
    overflow: hidden;
    font-family: 'gothic';
    font-family: 'myriadpro';
    margin: 0px;
    font-size: 16px;
}
#main_cont {
    height: 637px;
    width: 800px;
    background-color: #444444;
    border: 2px solid #444444;
    position: absolute;
}
#head_con1{
     border: 1px solid black;
    height: 33px;
    width: 799px;
    position: relative;
    background-color: #DDDDDD;
    /* background-repeat: repeat-x; */
    top: -1px;
}
#head_con2{
    border: 1px solid black;
    height: 33px;
    width: 798px;
    position: relative;
    background-color: #DDDDDD;
    /* background-repeat: repeat-x; */
    top: -2px;
}
.txt
{
    position:relative;
    font-size: small;
    font-weight: bold;
    font-family: sans-serif;
    font-family: 'myriadpro';
    padding: 10px;
}
#img_con1{
   position: relative;
    height: 250px;
    width: 798px;
    border: 1px solid;
    top: -2px;
    background-color: #031F07;
}
#img_1{
    background-image: url('../images/round.png');
    position: relative;
    width: 134px;
    height: 44%;
    background-repeat: no-repeat;
    margin-top: 47px;
    margin-left: 71px;
}
.img_txt{
    position: relative;
    font-size: 14px;
    /* font-weight: bold; */
    font-family: sans-serif;
    font-family: 'myriadpro';
    color: #21AFF7;
    top: 105px;
    left: 40px;
}
#img_2{
  position: relative;
    width: 276px;
    height: 207px;
    /* float: left; */
    left: 371px;
    /* border: 1px solid black; */
    background-image: url('../images/cylinder.png');
    /* display: block; */
    top: -143px;
}
.img_txt2{
    position: relative;
    font-size: 14px;
    /* font-weight: bold; */
    font-family: sans-serif;
    font-family: 'myriadpro';
    color: #FF9900;
    top: 178px;
    left: 100px;
}
.dis_con1{
    border: 1px solid #DFDFDF;
    width: 798px;
    height: 30px;
    top: -1px;
    position: relative;
    background-color: #DFDFDF;
    
}
#txt_3{
    position:relative;
    font-size: small;
/*    font-weight: bold;*/
    font-family: sans-serif;
    font-family: 'myriadpro';
    padding: 7px;
    
}
.img_3{
    position: relative;
    width: 750px;
    height: 93px;
    top: 4px;
    background-image: url('../images/graph.png');
    background-repeat: no-repeat;
    
}
.dis_con2{
    position: relative;
    width: 798px;
    height: 30px;
    border: 1px solid #DFDFDF;
    background-color: #DFDFDF;
    top: 10px;
    
}
#txt_4{
   position:relative;
    font-size: small;
/*    font-weight: bold;*/
    font-family: sans-serif;
    font-family: 'myriadpro';
    padding: 7px; 
    
}
.img_4{
    position: relative;
    width: 750px;
    height: 93px;
    top: 15px;
    background-image: url('../images/graph.png');
    background-repeat: no-repeat;
    
}
#gen_btn{
    position: relative;
    left: 626px;
    border: 1px solid black;
    background-color: #DFDFDF;
    border-radius: 4px;
    top: 42px;
    width: 82px;
    height: 20px;
}
#gen_txt{
    position: relative;
    text-align: center;
    font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: small;
    padding: 3px;
    cursor: default;
}

#iden_btn{
    position: relative;
    left: 716px;
    border: 1px solid black;
    background-color: #DFDFDF;
    border-radius: 4px;
    top: 20px;
    width: 82px;
    height: 20px;
}
#iden_txt{
    position: relative;
    text-align: center;
    font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: small;
    padding: 3px;
    cursor: default;
}
#gen_btn:hover{
    
    background-color: #A9A9A9;
}
#iden_btn:hover{
    
   background-color: #A9A9A9; 
}
#list_inp
{
   position: relative;
    top: 97px;
    left: 61px;
    width: 157px;
    height: 27px;
    font-style: italic;
    border: 1px solid gray;
}
#list_btn{
   position: absolute;
    border: 1px solid gray;
    width: 17px;
    height: 26px;
    top: 98px;
    left: 200px;
    background-color: #DFDFDF;
    border-radius: 2px;
}
.hei{
      height: 22px;
    width: 153px;
    border: 1px solod gray;
/*    font-style: italic;*/

}
#triangle{
  position: relative;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid #000000;
    top: 12px;
    left: 5px;
}
#list_btn:hover{
    background-color: #A9A9A9;  
    
}
#disab_div1{
  position: relative;
    border: 1px solid gray;
    width: 141px;
    height: 21px;
    top: -25px;
   left: 569px;
}
#dis_btn1{
    border: 1px solid gray;
    width: 17px;
    height: 21px;
    top: -22px;
    left: 141px;
    border-radius: 2px;
    position: relative;
}
#dis_tri1{
    position: relative;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid gray;
    top:10px;
    left: 5px;
    
}
#dis_txt1{
    position:relative;
    font-size: small;
/*    font-weight: bold;*/
    font-family: sans-serif;
    font-family: 'myriadpro';
    padding: 3px; 
    color:gray;
    
    
}
#disab_div2{
  position: relative;
    border: 1px solid gray;
    width: 141px;
    height: 21px;
    top: -25px;
   left: 569px;
}
#dis_btn2{
    border: 1px solid gray;
    width: 17px;
    height: 21px;
    top: -22px;
    left: 141px;
    border-radius: 2px;
    position: relative;
}
#dis_tri2{
    position: relative;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid gray;
    top:10px;
    left: 5px;
    
}
#dis_txt2{
    position:relative;
    font-size: small;
/*    font-weight: bold;*/
    font-family: sans-serif;
    font-family: 'myriadpro';
    padding: 3px; 
    color:gray;
    
    
}

.list1
{
    font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: small;
    height: 25px;
    

}
#clear
{
    position: absolute;
    top: 73px;
    left: 153px;
    background-image: url(../images/clear.png);
    background-repeat: no-repeat;
    background-size: 80% 80%;
    width: 50px;
    height: 27px;
}
#drop_list
{
    position: absolute;
    top: 72px;
    width: 14px;
    height: 22px;
    left: 137px;
    border:1px solid;
}
#list
{
    position: absolute;
    top: 126px;
    width: 137px;
    height: 181px;
    left: 61px;
    border: 1px solid;
    background-color: #ffffff;
    z-index: 100;
    display: none;
    cursor: default;    
}
.list_txt
{
    position: absolute;
    margin-top: 8px;
    margin-left: 9px;
    font-size: 12px;
}
.bullet
{
   margin-top: 3px;
    width: 23px;
    height: 22px;
}
.selected,#list_1:hover,#list_2:hover,#list_3:hover,#list_4:hover,#list_5:hover,#list_6:hover,#list_7:hover
{
    background-color: #a8c6ee;
}
.layerarea{
    position: absolute;
    top: 365px;
    background-color: #444444;
    width: 708px;
    height: 44px;
/*    border: 1px solid pink;*/
    left: 14px;
    
}
.hydrogen{
   position: absolute;
    top: -6px;
    left: -15px;
    background-image: url(../images/layer2_1.png);
    background-repeat: no-repeat;
    width: 513px;
    height: 55px;
    display: none;
}
.helium{
    position: absolute;
    top: -6px;
    left: -15px;
    background-image: url(../images/layer2_2.png);
    background-repeat: no-repeat;
    width: 596px;
    height: 55px;
    display: none;
}

.carbon{
    position: absolute;
    top: -6px;
    left: -15px;
    background-image: url(../images/layer2_3.png);
    background-repeat: no-repeat;
    width: 718px;
    height: 55px;
     display: none; 
}
.nitrogen{
    position: absolute;
    top: -6px;
    left: -15px;
    background-image: url(../images/layer2_4.png);
    background-repeat: no-repeat;
    width: 718px;
    height: 55px;
     display: none; 
    
}
.oxygen{
    position: absolute;
    top: -6px;
    left: -15px;
    background-image: url(../images/layer2_5.png);
    background-repeat: no-repeat;
    width: 718px;
    height: 55px;
     display: none; 
}
.neon{
     position: absolute;
    top: -6px;
    left: -15px;
    background-image: url(../images/layer2_6.png);
    background-repeat: no-repeat;
    width: 718px;
    height: 55px;
     display: none; 
}
.iron{
    position: absolute;
    top: -5px;
    left: -15px;
    background-image: url(../images/layer2_7.png);
    background-repeat: no-repeat;
    width: 718px;
    height: 55px;
     display: none; 
    
}
.random{
    position:absolute;
}
a img{
    position: absolute;
    bottom: 31px;
    
}

.iden_popup{
    position: absolute;
    border: 1px solid black;
    background-color: #C3C3C3;
    top: 0px;
    left: 0px;
    width: 201px;
    height: 303px;
    display:none;
}
.white_box{
   position: relative;
    /* border: 1px solid; */
    background-color: #FFFFFF;
    top: 33px;
    left: 0px;
    width: 201px;
    height: 270px;
}
.pop_txt{
   position: absolute;
    font-size: 12px;
    font-weight: bold;
    font-family: sans-serif;
    font-family: 'myriadpro';
    padding: 9px;
    color: #000000;
    top: 0px;
    left: 0px;
}
.close_btn{
    top: 6px;
    position: absolute;
    font-family: sans-serif;
    font-family: 'myriadpro';
    left: 181px;
    font-size: 15px;
    font-weight: bold;
    cursor:default;
    padding: 0px 4px;
    border: 1px solid transparent
}
.close_btn:hover{
    border: 1px solid;
}
.check{
    display: inline-block;
    vertical-align: bottom;
}
.check_txt{
    position: relative;
    display: inline-block;
    vertical-align: bottom;
    top: -2px;
}
.check_cont {
    padding-top: 10px;
    padding-left: 5px;
}
#chebox_1{
    border: 1px solid gray;
/*
    position: absolute;
    top: 16px;
    left: 15px;
*/
    background-color: #F6F6F6;
}
.che_txt1{
   font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: 13px;
/*
    top: 19px;
    position: absolute;
    left: 42px;
*/
}
#chebox_2{
    border: 1px solid gray;
/*
    position: relative;
    top: 44px;
    left: 15px;
*/
    background-color: #F6F6F6;
}
.che_txt2{
   font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: 13px;
/*
    top: 25px;
    position: relative;
    left: 42px;
*/
}
#chebox_3{
    border: 1px solid gray;
/*
    position: relative;
    top: 39px;
    left: 15px;
*/
    background-color: #F6F6F6;
}
.che_txt3{
   font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: 13px;
/*
    top: 20px;
    position: relative;
    left: 41px;
*/
}
#chebox_4{
    border: 1px solid gray;
/*
    width: 12px;
    height: 12px;
*/
/*
    position: relative;
    top: 35px;
    left: 15px;
*/
    background-color: #F6F6F6;
}
.che_txt4{
   font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: 13px;
/*
    top: 16px;
    position: relative;
    left: 42px;
*/
}
#chebox_5{
    border: 1px solid gray;
/*
    position: relative;
    top: 31px;
    left: 15px;
*/
    background-color: #F6F6F6;
}
.che_txt5{
    font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: 13px;
/*
    top: 12px;
    position: relative;
    left: 42px;
*/
}
#chebox_6{
    border: 1px solid gray;
/*
    position: relative;
    top: 27px;
    left: 15px;
*/
    background-color: #F6F6F6;
}
.che_txt6{
    font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: 13px;
/*
    top: 8px;
    position: relative;
    left: 43px;
*/
}
#chebox_7{
    border: 1px solid gray;
/*
    position: relative;
    top: 23px;
    left: 15px;
*/
    background-color: #F6F6F6;
}
.che_txt7{
   font-family: sans-serif;
    font-family: 'myriadpro';
    font-size: 13px;
/*
    top: 4px;
    position: relative;
    left: 43px;
*/
}
.com_btn{
   border: 1px solid gray;
    background-color: #DFDFDF;
/*
    top: 22px;
    left: 15px;
    position: relative;
*/
    width: 78px;
    height: 19px;
    border-radius: 3px;
    cursor: default;
     outline:none;
    margin: 5px;
    vertical-align: top;
    display: inline-block;
}
.com_txt{
    position: relative;
    font-family: sans-serif;
    font-family: 'myriadpro';
    text-align: center;
    font-size: 13px;
    padding: 2px;
    cursor:default;
    
}
.can_btn{
    border: 1px solid gray;
    background-color: #DFDFDF;
/*
    top: 244px;
    left: 103px;
    position: absolute;
*/
    width: 78px;
    height: 19px;
    border-radius: 3px;
    cursor: default;
    margin: 5px;
    color: black;
    vertical-align: top;
    display: inline-block;
   
}
/*
.com_btn:hover{
    
    background-color: #A9A9A9;
}
*/
.can_btn:hover{
    
   background-color: #A9A9A9; 
}
.tick{
    background-image: url(../images/tick.png);
    width:13px;
    height:10px;
    position: relative;
    display:none;
    
}
input[type="checkbox"]{
  width:15px; /*Desired width*/
  height:15px; /*Desired height*/
}
.correct_btn{
    border: 1px solid black;
    width: 179px;
    height: 104px;
    top: 146px;
    left: 301px;
    position: absolute;
    background-color: #DEDEDE;
    display: none;
}
.white_cor{
    border: 1px solid #DEDEDE;
    width: 177px;
    height: 72px;
    top: 30px;
    left: 0px;
    position: relative;
    background-color: #FFFFFF;
    
}
.cor_txt{
    position: relative;
    top: 12px;
    /* left: 28px; */
    font-size: 13px;
    /* font-weight: bold; */
    font-family: sans-serif;
    font-family: 'myriadpro';
    text-align: center;
    cursor:default;
}
.ok_btn{
    border: 1px solid gray;
    width: 66px;
    height: 21px;
    top: 24px;
    left: 56px;
    position: relative;
    border-radius: 3px;
    background-color: #B2CAE3;
    cursor: default;
}
.ok_txt{
    position: relative;
    top: 4px;
    /* left: 28px; */
    font-size: 13px;
    /* font-weight: bold; */
    font-family: sans-serif;
    font-family: 'myriadpro';
    text-align: center;
    cursor: default;

    
}
#correct{
   display:none; 
    
}
#incorrect{
  display:none; 

}

#inp_txt::-webkit-input-placeholder { 
        font-style: italic;

}

#inp_txt::-moz-placeholder { 
        font-style: italic;

}
#inp_txt:-ms-input-placeholder { 
        font-style: italic;

}
#loadInfo {
    position: absolute;
    width: 176px;
    height: 50px;
    margin: auto;
    left: 0px;
    right: 0px;
    top: 0px;
    bottom: 0px;
    font-size: 24px;
    text-align: center;
}
        #main_cont{
                opacity: 0;
        }