header {
    position: fixed;
    display: flex;
    justify-content: center;
    flex-grow: 1;
    z-index: 1000;
    top: 0;
    width: 100%;
    background-color: #fff;
}

header div.line {
    display: flex;
    flex-grow: 1;
    justify-content: space-between;
    align-items: flex-end;
    align-self: baseline;
    margin: 0 22%;
    height: 5rem;
    border-bottom: 10px solid #000;
    background-color: #fff;
}

header div.line div.logo {
    display: flex;
    flex-direction: column;
}

header span {
    padding-top: 0.5rem;
    font-size: 1rem;
}

header span.navigation {
    font-size: 2.5rem;
}

div.left-side {
    position: fixed;
    top: 15%;
    left: 2%;
    max-width: 15rem;
    min-width: 5rem;
}

main {
    margin: 5rem 25%;
    padding-top: 3rem;
}

footer {
    display: flex;
    justify-content: center;
    flex-direction: column;
    max-width: 55%;
    margin: 2rem auto;
    font-size: 0.7rem;
    color: #666;
}

footer div.line {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin: 0.5rem;
    font-size: 1.2rem;
}

aside .right-side {
    position: fixed;
    top: 12%;
    right: 2%;
    width: 22%;
    max-height: calc(100vh - 14%);
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 0.35rem;
    padding-bottom: 1rem;
    overscroll-behavior: contain;
    scrollbar-width: thin;
}