html, body {
  margin: 0;
  padding: 0;
  background-color: black;
  /* overflow: hidden; */
}


#reset_button{
  background-color: black;
  margin-top: 10px;
  
}
button {
  margin:2px auto;
    display:block;
    font-size: 19px;
    padding: 5px 10px;
    text-align: center;
    text-decoration: none;
    background-color: black;
    color: white;
    border: solid;
    border-color: white;
    border-radius: 5px;
}

canvas {
  display: block;
  
}

/* #container-2 {float: left;}

#header-center {float: center;} */

.header {
  background-color: #F1F1F1;
  height:200px;
  
}

.center{
  margin: auto;
  width: 60%;
  /* border: 3px solid #73AD21; */
  /* padding: 10px; */
  padding-right: 200px;
}

#container-3 {
  background-color: #F1F1F1;
}


.header .logo{
  
   width:200px;
   float: left;
   height: 100%;
  /* display: inline-block; */
  /* vertical-align: bottom; */
}
.header .title{
  position: relative;
  padding-top:50px;
  text-align: center;
  /* width: 85%; */
  /* float: left; */
  height: 100%;
  /* position:relative; */
 
  /* display: inline-block; */
  /* vertical-align: middle; */
}

/* .mainpage {
  height: 600px;
  padding: 50px;
 

} */