*{
    outline:none;
    max-width:100%;
    box-sizing:border-box;
}
html,body{
    height:100%;
}
body{
    text-align:center;
    display:flex;
    justify-content:center;
    align-items:center;
    background:#2b2b2b;
}
.btns{
    text-align:center;
    width:400px;
}
button{
    display:block;
    width:100%;
    margin:14px 0;
    padding:14px;
    background:#7f61ba;
    border:none;
    border-radius:5px;
    color:white;
    font-weight:bold;
}
h1{
 color:#408c42;   
    width:100%;
    background:#033b21;
    padding:10px;
    border:1px solid green;
}