.nav-footer {
    font-size: var(--font-size-xs);
    font-weight: bold;
    background-color: #fff;
    color: #575757;
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 3em;     
}

:root {
    --header-height: 3rem;
    --normal-font-size: .938rem;
    --tiny-font-size: .725rem;
  
    /*========== Colors ==========*/
    --hue: 174;
    --sat: 63%;
    --first-color: hsl(var(--hue), var(--sat), 40%);
    --first-color-alt: hsl(var(--hue), var(--sat), 36%);
    --title-color: hsl(var(--hue), 12%, 15%);
    --text-color: hsl(var(--hue), 8%, 35%);
    --body-color: hsl(var(--hue), 100%, 99%);
    --container-color: #2977C0;
    
    /*========== z index ==========*/
    --z-tooltip: 10;
    --z-fixed: 100;
}

ul {
    list-style: none;
}
a {
    text-decoration: none;
}


.b_nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav__menu { 
    position: fixed;
    bottom: 0;
    left: 0;
    background-color: var(--container-color);
    /*
    box-shadow: 0 -1px 12px hsla(var(--hue), var(--sat), 15%, 0.15);
    border-radius: 1.25rem 1.25rem 0 0;
    */
    width: 100%;
    padding: 0 1rem;
    display: grid;
    align-content: center;
    transition: .4s;
    box-shadow: 0px -2px 8px rgba(44, 44, 44, 0.25);
    border-radius: 30px 30px 0px 0px;
}
.nav__list, 
.nav__link {
  display: flex;
}
.nav__list {
    justify-content: center;
    justify-content: space-around;
    margin-top: 1rem;
    margin-bottom: 0.75rem;
}
.nav__link {
  flex-direction: column;
  align-items: center;
  row-gap: 4px;
  color: var(--title-color);
  font-weight: 600;
}
.nav__icon {
    height: 36px;
}
.nav__name {
    font-size: var(--tiny-font-size);
    color: #D1D1D1;
}
.nav__link.active-link .nav__name ,
.nav__link:hover .nav__name {
    color: #fff;
    font-weight: bold;
}
.nav__link.active-link .nav__icon_home,
.nav__link:hover .nav__icon_home {
    content:url(../images/icon_nav_home_mo.svg);
}
.nav__link.active-link .nav__iconav__icon_classn_home,
.nav__link:hover .nav__icon_class {
    content:url(../images/icon_nav_class_mo.svg);
}
.nav__link.active-link .nav__icon_resource,
.nav__link:hover .nav__icon_resource {
    content:url(../images/icon_nav_resource_mo.svg);
}
.nav__link.active-link .nav__icon_news,
.nav__link:hover .nav__icon_news {
    content:url(../images/icon_nav_news_mo.svg);
}
.nav__link.active-link .nav__icon_tools,
.nav__link:hover .nav__icon_tools {
    content:url(../images/icon_nav_tools_mo.svg);
}
.active-link {
    transition: .3s;
}

@media screen and (min-width: 576px) {
    .nav__name {
        font-size: var(--normal-font-size);
    }
}