HTMLify

 body{
                background-color: black;
                width: 100%;
                height: 100%;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: center;
            }
            .box{
                border-radius: 50px;
                width: 300px;
                height: 300px;
                border: 2px solid black;
                border-radius: 50%;
            }
            button{
                padding: 15px 25px;
                border-radius: 50px;
                font-size: 25px;
                margin-top: 60px;
                cursor: pointer;
                color: black;
                border: none;
                background-color: gray;
            }