html,
body {
    height: 100%;
}

.text_box {
    padding: 50px;
    width: 50%;
    align-content: center;
    border: 1px solid #eeeeee;
}

#container{
    width: 100%;
    height: 60%;
    background-color: white;
    display: flex;
    margin: 0 auto;
}

.center_input {
    width: 40%;
    display: flex;
    margin: 20px auto auto;
}