:root{
    --header-color: #ffffff;
    --header-background: #63999c;
}

html,
body {
    height: 100%;
    margin: 0;
    padding-top: 0px !important;
    display: flex;
    flex-direction: column;
}

.main-content {
    background-color: #f9f9f9;
    flex: 1;
}
.margin-nav {
    margin: -5px;
}

.margin-title-categories {
    margin-bottom: 17px;
}

.color-title-categories {
    color: var(--secondBackgroundColor);
}

.container-footer {
    position: absolute;
    width: 100%;
    bottom: 0;
}

body {
    font-size: 16px;
}
header {
    position: absolute;
    width: 100%;
    z-index: 1000;
    background: var(--header-color) !important;
    height: auto !important;
}