* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
}

.grid-container {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    grid-template-rows: auto 1fr 50px;
    grid-template-areas:
        "header header header"
        "nav main-content sidebar"
        "footer footer footer";

}

.header {
    grid-area: header;
    background-color: green;
    color: white;
    text-align: center;
    padding: 20px;
    /*grid-column: 1 / 4;*/
}

.nav {
    grid-area: nav;
    background-color: blue;
    color: white;
    padding: 20px;
    display: flex;
    align-items: center; 
}

.list {
    list-style: none;
}

.list-item {
    margin-bottom: 10px;
}

.list-item a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.main-content {
    grid-area: main-content;
    background-color: ghostwhite;
    padding: 20px;
    display: flex;
    align-items: center;
}

.sidebar {
    grid-area: sidebar;
    background-color: red;
    color: white;
    padding: 20px;
}

.sidebar h3 {
    margin-bottom: 20px;
}

.footer {
    grid-area: footer;
    background-color: gray;
    color: white;
    text-align: center;
    padding: 10px;
    /*grid-column: span 3;*/
}