html,
body,
#images,
#bg_1 {
    overflow: hidden;
    margin: 0;
    padding: 0;
}

body {
    background-image: url('ima/loginBackground.jpg');
    background-position: 50% 50%;
    background-attachment: fixed;
    font-family: Arial, Helvetica, sans-serif;
}

.bloque-centrado {
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

#logotipo {
    margin: auto;
    height: 150px;
    width: auto;
}

.bloque-logotipo {
    padding: 10px;
    text-align: center;
}

.bloque-login {
    width: 300px;
    background-color: rgba(0,0,0,.3);
    padding: 20px;
    color: white;
}

.form-group {
    margin-bottom: 10px;
}

.form-control {
    width: 100%;
    height: 35px;
    font-size: medium;
    border: none;
}

.text-danger {
    width: 100%;
    font-size: small;
}

.btlogin {
    width: 100%;
    height: 35px;
    font-size: medium;
    background-color: #60A2DE;
    color: white;
    border: none;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}

a {
    color: white;
}

.form-control {
    padding: 5px;
}

.links-acciones {
    text-align: center;
}