body {
    padding: 0;
    margin: 0;
}

* {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

a,
a:hover {
    text-decoration: none;
}

ul,
li {
    list-style: none;
}

ul {
    padding: 0;
    margin: 0;
}

/* ASIDE */
aside nav a {
    position: relative;
    padding-left: 4px;
    display: block;
}

aside nav a:not(.collapsed) {
    background: var(--color-lightblue);
}

aside nav a:not(.collapsed)::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    height: 100%;
    width: 4px;
    background: var(--color-main);
}

aside nav a.collapsed::before {
    display: none;
}