styles.css

body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
	background-color: #A349BD;
    /* background-color: #A349BD; /* Dark blue background */
	/* background: url('background.png') no-repeat center center;
	/* background-size: cover;*/
}

body, html {
    margin-top: 0;
    margin-right: 0;
    margin-left: 30px;
    margin-bottom: 0;
    padding: 0;
    height: 100%;
    font-family: Arial, sans-serif;
}

header {
    display: flex;
    justify-content: space-between;
    padding: 20px;
	color: white;
	
}

.logo {
	position: absolute;
	top: 11px;
	left: 15px;
	display: flex;
	align-items: center;
	width: 316px;
	height: 70px;
}

.logo img {
    height: 50px;
}

.hero {
    text-align: center;
    color: white;
    margin-top: 50px;
    margin-right: 50px;
    margin-bottom: 50px;
    margin-left: 50px;
	font-family: "楷体","楷体_GB2312";
}

.header-title img {
	color: white;
	margin-left: 100px;
	margin-top: 53px;
}

.header-title h1 {
    margin: 0;
    font-size: 2.5em;
}

.header-title p {
    font-size: 1.2em;
    color: #ddd;
}

.subtitle {
    font-size: 20px;
    margin-top: 20px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    padding-top: 0px;
    padding-right: 0px;
    padding-bottom: 0px;
    padding-left: 0px;
}

.main {
    display: flex;
    justify-content: center;
    align-items: center;
    height: calc(100% - 150px);
    background: url('background.png') no-repeat center center;
    background-size: cover;
}

.earth-image {
    width: 100%; /* Full width */
    height: auto;
    margin-top: 20px;
}

footer {
    text-align: center;
    padding: 20px 0;
    background: #383461; /* Darker blue */
    color: white;
    position: fixed;
    bottom: 0;
    width: 100%;
}

@media (max-width: 768px) {
    h1 {
        font-size: 32px;
    }
}