html, body{
    top: 0;
    left: 0;
    padding: 0;
    margin: 0;
    font-family: sans-serif;
}

body {
    min-height: 100vh;
}

.shadow-text { text-shadow: 3px 5px #0004; }
.helper { border: solid 1px red !important; }
.shadow-box { box-shadow: 0.2rem 0.2rem 1rem #777f; }