*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body{display:flex;justify-content:center;align-items:center;width:100%;height:100vh;overflow-x:hidden}.box{width:300px;height:300px;display:flex;flex-flow:row wrap}.button{display:flex;justify-content:center;align-items:center;width:100px;height:100px;cursor:pointer;font-size:2rem;font-weight:700}.box>.button:nth-child(2),.box>.button:nth-child(5),.box>.button:nth-child(8){border-right:2px solid;border-left:2px solid}.box>.button:nth-child(4),.box>.button:nth-child(5),.box>.button:nth-child(6){border-top:2px solid;border-bottom:2px solid}main{width:100%;height:fit-content;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:1rem;gap:1rem;-webkit-user-select:none;user-select:none;font-size:1.5rem}main>button{all:unset;padding:.5rem 1rem;cursor:pointer;border-radius:1rem;box-shadow:5px 5px 10px .1px #00000080;transition:ease-in-out .1s;font-size:1.2rem}main>button:active{box-shadow:none}main>button:hover{transform:scale(1.05)}footer{width:100vw;text-align:center;align-self:self-end;justify-content:flex-end}