body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}
.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}
header {
    background: #2c3e50;
    color: #fff;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: #e8491d 3px solid;
}
header a {
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
}
header ul {
    padding: 0;
    list-style: none;
}
header li {
    display: inline;
    padding: 0 20px 0 20px;
}
.hero {
    background: #fff;
    padding: 20px;
    margin-top: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.content {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}
.content article {
    background: #fff;
    padding: 20px;
    width: 30%;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
footer {
    background: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 10px;
    margin-top: 20px;
}