body, html {
    font-family: Arial;
    background-color: rgb(230, 230, 230);
    background-image: url('fondo.jpg');
    /* Full height */ 
    height: 100%; 
    /* Center and scale the image nicely */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
.contenedor{
    position: relative;
    display: inline-block;
    text-align: center;
}
.centrado{
    position: absolute;
    top: 50%;
    left: 50%;
    font-size: 10vh;
    color: rgb(230, 230, 230);
    transform: translate(-50%, -50%);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.form-login {
    width: 400px;
    height: 350px;
    background: #4e4d4d;
    margin: auto;
    margin-top: 180px;
    box-shadow: 7px 13px 37px #000;
    padding: 20px 30px;
    border-top: 4px solid #017bab;
    color: white;
}

.form-login h5 {
    margin: 0;
    text-align: center;
    height: 40px;
    margin-bottom: 30px;
    border-bottom: 1px solid;
    font-size: 20px;
}
.controls {
    width: 100%;
    border: 1px solid #017bab;
    margin-bottom: 15px;
    padding: 11px 10px;
    background: #252323;
    font-size: 14px;
    font-weight: bold;
}

.buttons {
    width: 100%;
    height: 40px;
    background: #017bab;
    border: none;
    color: white;
    margin-bottom: 16px;
}
.form-login p {
    height: 40px;
    text-align: center;
    border-bottom: 1px solid;
}

.form-login a {
    color: white;
    text-decoration: none;
    font-size: 14px;
}

.form-login a:hover {
    text-decoration: underline;
}