video{
   background-color:darkred;
   display:none;
}


#canvasContainer{
   position:absolute;
   left:50%;
   top:50%;
   transform:translate(-50%,-50%);
   text-align:center;
}

body{
   margin:0;
   font-family:Arial;
}


button{
   cursor:pointer;
   border: none;
   padding: 2px 10px 2px 10px;
   margin:2px 20px 2px 20px;
   height:22px; /*same size as input*/
   border-radius: 5px;
   background-color: darkred;
   color:white;
}
button:hover{
   background-color: red;
}
button:disabled,
button:disabled:hover{
   background-color: gray;
   cursor:default;
}

.bottom{
   display:flex;
   align-items: center;
   justify-content: center;
}