.vi-input-bottom {
    position: fixed;
    bottom: 0;
    display: block;
    width: 100%;
    background-color: inherit;
    border: none;
    color: inherit;
    border-top: 1px gray solid;
}

.vi-input-bottom:focus {
    outline: none;
}

.vi-input-error {
    position: fixed;
    bottom: 17px;
    display: block;
    width: 100%;
    background-color: lightgray;
    border: none;
    color: black;
}