html, body {
    height: 80%;
    margin: 0;
    /*overflow-y: hidden;*/
}
body {
    position: relative;
    float: none;
    background-image: url('../../Image/Centrale/CDEJFond1.jpg');
    background-repeat: no-repeat;
    background-position: center center;
    background-attachment: fixed;
    background-size: cover;
    overflow-y: hidden;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 120px);
    justify-content: center;
    padding: 20px 0;
}
.login-container {
    top: 250px !important;
    bottom: -150px !important;
    margin-top: -15rem;
    margin-bottom: 10rem !important;
}

.card {
    position:relative;
    float:none;
    top:250px;
    border: none;
    border-radius: 10px;
}

.input-group-text {
    background-color: #fff;
    border-right: none;
}

.form-control {
    border-left: none;
}

    .form-control:focus {
        box-shadow: none;
        border-color: #ced4da;
    }

.btn-primary {
    background-color: #0d6efd;
    border: none;
    transition: all 0.3s;
}

    .btn-primary:hover {
        background-color: #0b5ed7;
        transform: translateY(-2px);
    }

.invalid-feedback {
    font-size: 0.875em;
    margin-top: 0.25rem;
}

.ent {
    color: #0d6efd;
    font-weight: 600;
}