:root {
    --color-light: #f8f9fa;
    --color-medium: #e8e8e8;
    --color-dark: #a1a1a1;
    --color-unaccent: #808080;
    --color-white: #fff;
    --color-black: #000000FF;
    --color-accent: #9BC6FF;

    --spacing-small: 10px;
    --spacing-medium: 15px;
    --spacing-large: 30px;

    --border-radius: 3px;
    --linear-gradient: linear-gradient(to right, #e2f87c, #d6f567, #c8f151, #b9ee38, #a8eb12);
    --box-shadow: 0 16px 24px 2px rgba(33, 37, 41, .02),
    0 6px 30px 5px rgba(33, 37, 41, .04),
    0 8px 10px -5px rgba(33, 37, 41, .1);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    padding: 0;
    line-height: 1.7;
    background: var(--color-light);
}

header {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    flex-wrap: wrap;
    background-color: var(--color-medium);
    padding: 20px 10px;
}

.header-logo {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.header-logo img {
    height: 60px;
}

header a {
    color: var(--color-black);
    padding: 12px;
    text-decoration: none;
    font-size: 18px;
}

header a:hover {
    background-color: var(--color-accent);
    color: var(--color-black);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-dark);
    border-radius: 5px;
}

::-webkit-scrollbar-track {
    background-color: var(--color-white);
}