#container1 {
    left: 50%;
    position: absolute;
    transform: translate3d(-50%, 0, 0);
}

#container2 {
    position: absolute;
    left: 50%;
    top: 200px;
    transform: translate3d(-50%, 0, 0);
}

#nameInput {
    width: 600px;
    padding: 14px 6px;
    margin: 8px 0;
    box-sizing: border-box;
    border: 3px solid #ccc;
    -webkit-transition: 0.5s;
    transition: 0.5s;
    outline: none;
    border-radius: 8px;
}

#goButton {
    width: 100px;
    padding: 14px;
    margin: 8px 0;
    box-sizing: border-box;
    border: 3px solid #ccc;
    outline: none;
    border-radius: 8px;
}