* {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    font-weight: lighter;
    vertical-align: baseline;
    background: transparent;
}

body, h1, h2, h3, h4, h5, h6, p, button {
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}

a {
    color: #489fef;
}

strong {
    font-weight: bold;
}

h1, h2 {
    font-size: xx-large;
}

h3, h4 {
    font-size: x-large;
}

h5, h6 {
    font-size: larger;
}

h1, h3, h5 {
    font-weight: bold;
}

button * {
    display: inline;
}

img {
    padding: 2em;
    max-width: 540px;
    max-height: 540px;
    width: auto;
    height: auto;
}

ul {
    margin-left: 2em;
}

#content {
    padding: 1.5em 2em;
}

#header {
    position: sticky;
    top: 0px;
    width: auto;
    padding: 1.5em 1em;
    background-color: #2f4f4f;
    color: white;
}

.button_link {
    position: relative;
    padding: 1em 1.5em;
    min-width: 100px;
    background-color: black;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color 150ms;
}

.button_link:hover {
    background-color: grey;
}

.button_link i {
    position: relative;
    bottom: 0px;
    padding-top: 8px;
    display: block;
    transition: bottom 150ms;
}

.button_link:hover i {
    bottom: 2px;
}

.button_link span {
    position: relative;
    bottom: 0px;
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: bottom 150ms, text-decoration-color 150ms;
}

.button_link:hover span {
    bottom: 2px;
    text-decoration-color: white;
}

.flex_row {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2em;
}