.lockscreen.middle-box {
    width: 200px;
    padding-top: 110px;
}

.loginscreen.middle-box {
    width: 300px;
}

.middle-box {
    max-width: 400px;
    z-index: 100;
    margin: 0 auto;
    padding-top: 40px;
}

.ajax-loader {
    visibility: hidden;
    background-color: rgba(255,255,255,0.7);
    position: absolute;
    z-index: +100 !important;
    width: 100%;
    height: 100%;
}

.ajax-loader img {
    position: relative;
    top: 50%;
    left: 50%;
}