html {
    font-family: Avenir, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background:black;
    color: white;
}

:root {
    --col-hl: rgb(31, 133, 241);
    --col-hl-a: rgba(31, 171, 241, 0.5);
}

body {
    padding:0;
    margin:0;
}

input, textarea, select {
    font-size:16px;
}

.hover-shadow:hover {
    box-shadow: 0 0 16px rgba(0, 0, 0, 0.5) !important;
}

.hover-border:hover {
    border: 5px solid var(--col-hl-a) !important;
}

.container-basic {
    padding:2rem;
    text-align:center;
}