body {
    padding: 0 16px;
}

.margin-5 {
    margin: 5px;
}

input[type=button], .noselect {
    -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none;   /* Chrome/Safari/Opera */
    -khtml-user-select: none;    /* Konqueror */
    -moz-user-select: none;      /* Firefox */
    -ms-user-select: none;       /* Internet Explorer/Edge */
    user-select: none;           /* Non-prefixed version, currently
                                  not supported by any browser */
}