form > div {
    display: block;
    margin: 0 auto 2rem auto;
}

form > div:focus-within {
    border-block-color: white!important;
    -webkit-box-shadow:1px 16px 29px -5px rgba(255,255,255,0.26)!important; 
    box-shadow: 1px 16px 29px -5px rgba(255,255,255,0.26)!important;
}

form > button {
    display: block;
    margin: auto;
}

form input {
    width: 80%!important;
}