*{
    margin:0;
    padding:0;
    box-sizing:border-box;
body{
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    background-color: #f4f4f4;
}

.content{
    padding: 20px;
    text-align: center;
}

.main-header{
    background-color: #f4f4f4;
    padding: 15px 30px;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo{
    font-size: 1.8rem;
    font-weight: bold;
    color: #333;
    text-decoration: none;
}

.main-nav ul{
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: 25px;
}

.main-nav a{
    text-decoration: none;
    color: #555;
    font-size: 1rem;
    font-weight: 500;
    padding-bottom: 5px;
    transition: color 0.3s, border-botton-color 0.3s;
}

.main-nav a:hover{
    color: #007bff;
    border-bottom: 2px solid #007bff;

}