html,
body {
    background-color: #000000;
    color: #636b6f;
    font-family: "Nunito", sans-serif;
    font-weight: 600;
    height: 100vh;
    margin: 0;
}

.modal-backdrop.show {
    opacity: 0.9;
}

.full-height {
    height: 80vh;
}

.flex-center {
    align-items: center;
    display: flex;
    justify-content: center;
}

.position-ref {
    position: relative;
}

.top-right {
    position: absolute;
    right: 10px;
    top: 18px;
}

.content {
    text-align: center;
}

.title {
    font-size: 3.5rem;
}

.links > a {
    color: #636b6f;
    padding: 0 25px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1rem;
    text-decoration: none;
}

.m-b-md {
    margin-bottom: 30px;
}

.btn-primary2 {
    color: #fff;
    background-color: #155f82;
    border-color: #155f82;
}

.btn-primary2:hover {
    color: #fff;
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.btn-warning2 {
    color: #fff;
    background-color: #e97132;
    border-color: #e97132;
}

.btn-warning2:hover {
    color: #fff;
    background-color: #e85131;
    border-color: #e85131;
}

.btn-green {
    font-weight: 600;
    color: #000;
    background-color: #8fa990;
    border-color: #8fa990;
}

.btn-green:hover {
    color: #000;
    background-color: #717d6a;
    border-color: #717d6a;
}

.btn-responsive {
    width: 100%;
}

/* Input file photo user */
.picture-input {
    display: none;
}

/* img-container */
.picture {
    width: 130px;
    height: 130px;
    background-color: #d9d9d9a4;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
}

@media (max-width: 992px) {
    .title {
        font-size: 2rem;
    }
}

@media (max-width: 278px) {
    .title {
        font-size: 1rem;
    }
}