L.css

*
{
    box-sizing: border-box;
}

*:focus
{
    outline: none;
}

body
{
    font-family: Arial;
    background-color: #66726b;
    padding: 50px;
}

.login
{
    margin: 20px auto;
    width: 300px;
}

.login-screen
{
    background-color: #FFF;
    padding: 20px;
    border-radius: 5px;
}

.app-title
{
    text-align: center;
    color: #777;
}

.login-form
{
    text-align: center;
}

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

input
{
    text-align: center;
    background-color: #ECF0F1;
    border: 2px solid transparent;
    border-radius: 3px;
    font-size: 16px;
    font-weight: 200;
    padding: 10px 0;
    width: 250px;
    transition: border .5s;
    color: #1e1e1e;
}

input:focus
{
    border: 2px solid #3498DB;
    box-shadow: none;
}

.btn
{
    border: 2px solid transparent;
    background: #3498DB;
    color: #ffffff;
    font-size: 16px;
    line-height: 25px;
    padding: 10px 0;
    text-decoration: none;
    text-shadow: none;
    border-radius: 3px;
    box-shadow: none;
    transition: 0.25s;
    display: block;
    width: 250px;
    margin: 0 auto;
}

.btn:hover
{
    background-color: #2980B9;
}

.login-link
{
    font-size: 12px;
    color: #444;
    display: block;
    margin-top: 12px;
}

#log
{
    border-radius: 6px 0px 6px 0px;
    min-width: 71px;
    min-height: 30px;
    background-color: #fff6f6;
}