.login-div {
    border: 1px solid #4A687D;
    width: 450px;
    padding: 30px;
    text-align: center;
    -webkit-box-shadow: 1px 5px 50px -28px #4A687D;
    box-shadow: 1px 5px 50px -28px #4A687D;
    color: #4a687d;
}
.login-div input {
    min-width: 100%;
    margin-bottom: 15px;
}
    .login-div input:focus {
        min-width: 100%;
        margin-bottom: 15px;
        border-color: #4A687D;
        -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(29,41,49,.4);
        box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(29,41,49,.4);
    }

    .login-div button {
        min-width: 100%;
        background-color: #4A687D;
    }

html, body {
    height: 100%;
}

body {
    margin: 0;
}

.flex-container {
    height: 100%;
    padding: 0;
    margin: 0;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column
}

.flex-row {
    width: auto;
}

.flex-row h2 {
    padding-bottom: 10px;
}

.flex-item {
    background-color: tomato;
    padding: 5px;
    width: 20px;
    height: 20px;
    margin: 10px;
    line-height: 20px;
    color: white;
    font-weight: bold;
    font-size: 2em;
    text-align: center;
}