body {
    background-color: #fa3232;
    font-family: Arial, Helvetica, sans-serif;
}

header {
    background-color: #ff3333;
    padding: 40px;
    text-align: center;
    font-size: 35px;
    color: rgb(255, 255, 255);
}

nav {
    float:left;
    width: 30%;
    height: 300px;
    background: #295eff;
    padding: 20px;
    
}

nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}
a{
    text-decoration: none;
    color: white;
    font-weight: 700;
}
a:hover{
    color:#ff3333
}
article {
    color: white;
    float: left;
    width: 70%;
    height: 300px;
    background-color: #213bff;
    padding: 20px;
}

section::after {
    content:"";
    display: table;
    clear: both;
}

footer {
    position: fixed;
    bottom: 0px;
    width: 100%;
    background-color: #1414bd;
    padding: 20px;
    text-align: center;
    color: #666;
}

@media (max-width=600px) {

    nav,
    article {
        width: 100%;
        height: auto;
    }
}

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