* {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

body,
html {
    width: 100%;
    height: 100%;
    box-sizing: border-box;
}

header {
    background-color: #1036f4;
    color: #fff;
    opacity: 0.9;
}

.logo a {
    text-decoration: none;
    color: white;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 8px;
    max-width: 1200px;
    margin: 0 auto;
}

nav ul {
    display: flex;
    gap: 15px;
    align-items: center;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
}

nav ul li {
    list-style: none;
}

ul li a button {
    padding: 8px 15px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    font-weight: 550;
}

main {
    padding: 10px 8px;
    max-width: 1200px;
    margin: 0 auto;
}

.first-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.first-section-top {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 60%;
    margin-top: 20px;
}

.first-section-top h1 {
    font-size: 35px;
    opacity: 0.8;
}

.first-section-top p {
    font-size: 14px;
    color: gray;
}

.bottom-line {
    width: 100px;
    height: 2px;
    background-color: green;
}

.content-box p {
    opacity: 0.8;
    font-size: 14px;
    margin-bottom: 20px;
    margin-top: 20px;
}

footer {
    background-color: #2a2929;
    color: #fff;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 8px;
    text-align: center;
}

.footer-inner p {
    font-size: 14px;
    opacity: 0.8;

}

.footer-inner ul {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
    justify-content: center;
}

.footer-inner ul li {
    list-style: none;
}

.footer-inner ul li a {
    font-size: 14px;
    text-decoration: none;
    color: #fff;
    opacity: 0.9;

}

.footer-inner ul li a:hover {
    text-decoration: underline;
}

@media screen and (max-width: 768px) {
    ul li:nth-child(1) {
        display: none;
    }

    .first-section-top {
        width: 100%;
    }
}