#container {
    position: relative;
    width: 1000px;
    height: 600px;
    border: 1px solid #ccc;
    overflow: hidden;
    margin: 0 auto; 
    display: flex;
    align-items: center; 
    justify-content: center;
}

#randomButton {
    position: absolute;

}

.btn {
background:blue;
color:#ffffff;
width:100px;
height:30px;
text-align:center;
overflow:hidden;
display:block;
margin:0 auto;
}

.btn:hover {
opacity:0.7;
}

#counter {
	text-align:center;
	
}

.buttonadd{
	
}