* {
    padding: 0;
    margin: 0;
    border: 1px solid black;
}
.container {
    width: 700px; 
    margin: 0 auto;
    box-sizing: border-box;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}  
header {
    display: flex;
    justify-content: space-between;
    width: 100%;
    align-items: center ;
    padding: 1.2rem 0;
}
header>p {
    font-size: 1.5rem;
    font-weight: 700;
}
header>ul {
    display: flex;
}
header>ul>li {
    list-style-type: none;
    margin-left: 1.5rem;
}
header>ul>li>a {
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 800;
    padding-bottom: 5px;
}
header>ul>li:first-child>a {
    border-bottom: 5px solid
    black;
}
header>ul>li>a: :hover {
    border-bottom: 5px solid
    gray;
}
section {
    padding: 0 3rem;
    text-align: center;
}
section>p {
    margin-bottom: 2rem;
}
section>p:first-child {
    font-size: 2rem;
    font-weight: 900;
}
section>p:last-of-type {
    font-size: 1.3rem;
    font-weight: 500;
}
section>a {
    display: block;
    width: 150px;
    font-size: 1.3rem;
    font-weight: 600;
    margin: auto;
    padding: 1rem;
    border-radius: 10px;
    text-decoration: none;
}
footer {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}
footer>a {
    text-decoration: none;
}