body {
    background-color: #2980b9;
}

.login-form {
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    padding: 50px;
    background-color: white;
    border-radius: 10px 10px 10px 10px;
    width: 500px;
}