.justify-content-center {
    -ms-flex-pack: center!important;
    justify-content: center!important;
}
.form-control {
    display: block;
    width: 100%;
    height: calc(1.5em + .75rem + 2px);
    padding: .375rem .75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: .25rem;
    transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out
}
.mt-auto,.my-auto {
    margin-top: auto!important
}

.mr-auto,.mx-auto {
    margin-right: auto!important;
}

.mb-auto,.my-auto {
    margin-bottom: auto!important
}

.ml-auto,.mx-auto {
    margin-left: auto!important
}

.justify-content-center {
    -ms-flex-pack: center!important;
    justify-content: center!important;
}