*{box-sizing:border-box}body{background-color:black;color:white}.main-btn{width:200px;height:30px;margin-top:200px;cursor:pointer;margin-left:300px}.container{width:1000px;margin:0 auto}.alonBox{display:flex;align-items:center;flex-direction:column;gap:10px;margin-top:100px}