@header-height: 40px;

body {
    margin-top: @header-height;
}

.loading {
    background: url(/images/loader.gif) no-repeat center center;
}

@header-height: 40px;

@media (min-width: 981px) {
    body {
        margin-top: @header-height;
    }
}

.loading {
    background: url(/images/loader.gif) no-repeat center center;
}

Fix padding-top with responsive design
Fix padding-top with responsive design
