html{
  height: 100%
  width: 100%
}
body {
    font-size: 15pt;
}
body {
 margin: 0;
 padding-top: 50%;
 position: relative;
}

#main {
        
    padding: 20px;
    box-shadow: 0 0 100px 80px  lightblue;
    background: lightblue;
    text-align: center;
    
}

.dif {
    display: inline-block ;
    margin-top: 8px;
    font-weight: bold;
    font-size: 1em;
    width: 120px;
}


#log {
   display:none;
   position: relative;
   font-weight: bolder;
   font-size: 0.8em;
   text-align: center;
}

canvas {
    position: fixed;
    display: block; 
    border: 3px solid #eee;
    margin: auto;
    border-radius: 7px;
    box-shadow: 0 0 15px;
}

#info {
    margin-left: 40px;
    color: red;
}
button {
    border:1px solid white;
    border-radius: 7px;
    box-shadow: 0 0 5px, inset 0 0 25px;
    padding: 10px 40px;
    background-color: #f3f3f3;
    font-weight: bold;
    outline-style: none;
}

#btn-left, #btn-right {
    border-radius: 50%;
    padding: 0 20px ;
    font-size: 2em;
}

#infdiv {
    display:none;
    position: relative;
    margin-auto
    width: 80%;
    border: 3px solid lightblue;
    background-color: white;
    padding: 10px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 0 20px;
    font-weight: bolder;
    font-size: 0.9em;
}

.modal {
  border-radius: 10px;
  display: none; 
  position: relative;
  z-index: 99; 
  overflow: auto;
  background-color: rgba(0,100,0,0.5); 
}


.modal-content {
  color: white;
  background-color: rgba(0,100,0,0.4); 
  margin: 15% auto; 
  padding: 20px;
  border: 2px solid white;
  border-radius: 10px;
  width: 80%;
  text-align: center;
}


.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}