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

html {
    background-image: url(/assets/images/login_bg.jpg);
    background-position: center center;
    background-repeat: repeat;
    background-size: cover;
}

body {
    background-color: rgba(255, 255, 255, 0.5);
}

#bloc_login {
    position: relative;
    padding: 25px 25px;
    border-radius: 5px;
    background: white;
    box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
    text-align: center;
}

#bloc_login .form-group
{
    text-align: left;
    min-width: 300px;
}

#bloc_login .form-group label
{
    font-style: normal;
    font-weight: normal;
    font-size: 12px;
    line-height: 16px;
    color: rgba(0, 0, 0, 0.539261);
}

#bloc_login h1 {
    font-size: 36px;
    font-weight: bold;
}

#bloc_login .btn {
    font-weight: bold;
    font-size: 18px;
    border-radius: 5px;
    min-width: 150px;
}

#bloc_login .logo {
    position: absolute;
    top: 5px;
    left: 5px;
    height: 45px;
    width: 45px;
}

@media (min-width: 992px) {
    #bloc_login .logo {
        height: 100px;
        width: 100px;
    }
    #bloc_login .form-group {
        margin-left: 75px ;
        margin-right: 75px;
        min-width: 330px;
    }
    #bloc_login .btn {
        font-size: 24px;
        min-width: 200px;
    }
}