.tb {
    width: 100%;
}

.tb.bg-red {
    border: 2px outset #FF0000;
}

input.bg-red {
    border: 2px outset #FF0000;
}

.col-9.bg-red:focus {
    border: 2px outset #FF0000;
}

#spinner{
    display: none;
    position: absolute;
    left: 50%;
    top: 30%;
    /*width: 100px;*/
    /*height: 60px;*/
    padding: 30px;
    border: 1px solid black;
    background-color: white;
    z-index: 1000;
}

#spinner > img {
    display: block;
    margin-left: auto;
    margin-right: auto;
}