body{
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}
div#mainContainer{
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0,0,0,.5);
}
div#loginContainer{
    background: rgba(255,255,255,.8);
    width: 400px;
    margin: 10px;
    padding: 15px;
    box-shadow: 0 0 15px 5px black;
    text-align: center;
}
span#title{
    font-size: 26px;
}
div#input{
    max-width: 300px;
    margin: 0 auto;
}
div#input input{
    display:block;
    width: 100%;
    border-radius: 3px;
    padding: 3px;
    border: 1px solid rgb(100,100,100);
}
div#input label{
    margin-top: 20px;
    display: block;
}
input#login{
    display: inline-block;
    background: white;
    border-color: rgba(0,0,0,.35);
    color: rgba(0,0,0,.35);
    margin-right: 10px;
    margin-top: 10px;
    width: auto;
    padding: 3px 20px;
    font-weight: bold;
    font-size: 18px;
    transition: color .25s, border .25s;
}
input#login:focus, input#login:hover{
    color: rgba(0,0,0,.55);
    border-color: rgba(0,0,0,.55);
}
div.error{
    color: firebrick;
    font-weight: bold;
}
div.invalid{
    display: none;
}
div.g-recaptcha{
    margin-top: 20px;
    margin-bottom: 10px;
}