#main{
    width: 700px;
    height: 500px;
    background: radial-gradient(#FFFFFF, #07FEF3);
    margin: auto;
    border: 5px  #ffcb00;
    border-style: ridge;
    font-family: sans-serif;
}

#top{
     
    height: 200px;
    display: flex;
}

#content{
    display: flex;
    height: 300px;
}
#priklad{
    flex: 4;
    background: url('images/intro.png');
} 
#tlac{
    flex: 1;
    z-index: 5;
}

#tlac3{
 background: url('images/help.png');
   background-size: contain;
   background-repeat:no-repeat;   
}

.cisla{
    width: 70px;
    height: 100px;
    border-radius: 10px;
    margin-left: 10px;
    margin-top: 60px;
    float:left;
    font-size: 80px;
    text-align: center;
    font-weight: bold;
    color: #000000;
    opacity: 0;
    background: #ABFEFB;
    box-shadow: 3px 3px 3px 0px #2D2929 inset;
    line-height:100px;
}
#cislo1{
    margin-left: 50px;
}
#cislo5{
    color:red;
}
#cislo1, #cislo3, #cislo5{
    width: 100px;
}
input#vysledek{
    width: 70px;
    height: 100px;
    font-size: 80px;
    text-align: center;
    font-weight: bold;
}
.but {
    width: 80px;
    height: 80px;
    list-style: none;
    cursor: pointer;
    background:black;
    border-radius: 5px;
    margin: 10px;
    margin-left: 30px;
    box-shadow:2px 2px 3px;
    
}
.but:hover {
   box-shadow:1px 1px 1px;
}


#down{
    width: 500px;
    //visibility: hidden;
    margin-top: 40px;
}
.kytka{
height: 60px;
    width: 60px;
    background: #ffcb00;
    background-size: contain;
    background-repeat: no-repeat;
    font-size: 42px;
    font-weight: bold;
    cursor: pointer;
    float: left;
    margin: 5px;
    list-style: none;
    text-align: center;
    //border: 1px solid;
    box-shadow: 2px 2px 3px;
    border-radius: 5px;
    line-height:60px;
}
.kytka:hover{
    box-shadow: 1px 1px 1px;
}
#kytka9{
        margin-left: 75px;
}


.kytka_text{
     position: relative;
     left: 0px;
     top: 0px;
}
#ano{
  position: relative;
  left: 500px;
  top: -400px;
  height: 150px;
  width: 150px;
  background: url('images/ano.png');
  background-size: contain;
  background-repeat:no-repeat;
  display: none;
}
#priklad_content{
    position: absolute;
    /*    position: relative;left: -400px;*/
    height: 200px;
    width: 560px;
    opacity: 0;
    background: url('images/mraky.png');
    background-size: contain;
    background-repeat:no-repeat;
    margin-top: 30px;
    }

#popup_demo{
    width: 600px;
    height: 200px;
    position: relative;
    //left: 200px;
    top: -450px;
    background: #ffb100;
    padding: 5px;
    border-radius: 6px;
    border: 1px solid black;
    display: none;
    color: #000;
    margin:0 auto;
    text-align: justify;
    z-index:100;
}
#popup_text{
  font-size: 20px;
    margin: 5px;
    font-weight: bold;

}
#kriz{
   float:right;
   margin:10px;
   cursor: pointer;
}
#klavesnice{
    width: 350px;
    height: 200px;
/*    border: 1px solid black;*/
    float: left;
}
#vstup{
   width: 100px;
    height: 60px;
    //border: 1px solid black;
    float: left;
    margin: 10px;
    margin-top: 30px;
    background: #f9ffff;
    box-shadow: 3px 3px 3px #000 inset;
    font-size: 50px;
    font-weight: bold;
    text-align: center;
    border-radius: 5px;
}
#vyber{
        width: 100px;
    height: 60px;
    //border: 1px solid black;
    float: left;
    margin: 10px;
    margin-top: 20px;
    cursor: pointer;
    font-size: 25px;
    font-weight: bold;
        background: #ffcb00;
         box-shadow: 2px 2px 3px;
         border-radius: 5px;
        
}
#vyber:hover{
    box-shadow: 1px 1px 3px;
}
#volba{
   
    width: 170px;
    //visibility: hidden;
    margin-top: 40px;
    margin-left: 30px;
/* border: 1px solid black;*/
}
.vol{
     width: 60px;
    height: 30px;
    //border: 1px solid #080844;
    float: left;
    margin: 10px;
    border-radius: 5px;
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    box-shadow: 1px 1px 1px black;
    background: #ffcb00 !important;
    line-height:30px;
    cursor: pointer;
}
.vol:hover{
    box-shadow: 1px 1px 1px inset !important;
    background: #ffcb00 !important;
}