* {
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: rgb(31, 30, 72);
    background-color: rgb(238, 231, 223);
    margin-block: 0;
}

footer {
    color: rgb(31, 30, 72);
    background-color: rgb(175, 216, 137);
    padding: 1rem;
    margin-block: 1.5rem;
    border: solid 3px rgb(31, 30, 72);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 20px;
    padding: 1rem;
    border: solid 3px rgb(31, 30, 72);
    color: rgb(31, 30, 72);
    background-color: rgb(175, 216, 137);
}

header nav ul {
    display: flex;
    gap: 1rem;
    list-style: none;
    flex-wrap: wrap;
}

header nav ul li a {
    display: block;
    color: rgb(245, 245, 245);
    background-color: rgb(141, 167, 93);
    width: 6rem;
    height: 3rem;
    padding-block: 0.6rem .6rem;
    text-align: center;
    text-decoration: none;
    margin-inline: 0%;
    border: solid 3px rgb(31, 30, 72);
}

header nav ul li a:hover {
    color: rgb(27, 57, 47);
    background-color: rgb(245, 245, 245);
    transition: 0.5s;
}

header img {
    display: flex;
    background-color: rgb(175, 216, 137);
    width: 6rem;
    padding-block: 0 .0.5rem;
}

img {
    max-width: 100%;
    display: flex;
    border: solid 3px rgb(31, 30, 72);
}

article a {
    background-color: rgb(141, 167, 93);
    color: rgb(245, 245, 245);
    font-size: 20px;
    text-decoration: none;
    text-align: center;
    display: block;
    border: solid 3px rgb(31, 30, 72);
    width: 6rem;
    height: 3rem;
    padding-block: 0.6rem;
    margin-bottom: 5%;
    transition: background-color 0.7s ease, color 0.3s ease;
}

article a:hover {
    color: rgb(31, 30, 72);
    background-color: rgb(245, 245, 245);
    border: solid 3px rgb(31, 30, 72);
    transition: 0.5s;
}

h2 {
    display: flex;
    color: rgb(31, 30, 72);
    background-color: rgb(175, 216, 137);
    border: solid rgb(31, 30, 72);
    font-size: 25px;
    padding-block: 0.4em .5em;
    margin-inline: 0%;
    width: 18rem;
    display: block;
    text-align: center;
}

h3 {
    display: flex;
    color: rgb(31, 30, 72);
    background-color: rgb(175, 216, 137);
    border: solid rgb(31, 30, 72);
    font-size: 20px;
    width: 15rem;
}