:root {
    --main-background-color: white;
    --secount-background-color: rgb(146,146,146);
}

body {
    margin: 0px;
    background-color: var(--main-background-color);
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background-color: var(--secount-background-color);
}

main {
    width: 70%;
    margin-left: 10%;
    background-color: var(--secount-background-color);
    padding: 16px;
    margin-top: 5%;
    display: flex;
    align-items: start;
    justify-content: center;
    flex-direction: column;
    padding-left: 5%;
    border-radius: 8px;
}

main p {
    width: 70%;
}

main div {
    background-color: var(--main-background-color);
    width: 90%;
    padding: 16px;
    margin-top: 10px;
    border-radius: 8px;
}

footer {
    background-color: var(--secount-background-color);
    display: flex;
    align-items: center;
    justify-content: space-around;
    flex-direction: row;
    margin-top: 16px;
}

footer a {
    text-decoration: none;
    color: black;
    padding: 8px;
}

footer a:hover {
    background-color: rgba(0, 0, 0, 0.3);
}

.introduction {
    margin-top: 32px;
}

.changings {
    margin-bottom: 32px;
}