* {
    box-sizing: border-box;
}
body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    background-color: #c1cad9;
}
#wrapper {
    width: 80%;
    margin: auto;
    background-color: #ffffff;
}
header {
    background-color: #ffffff;
    color: #496b81;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}
header img {
    width: 80px;
    height: auto;
}
nav {
    display: flex;
    justify-content: space-around;
    background-color: #6864d9;
}
nav a {
    color: white;
    padding: 14px;
}
nav a:hover {
    background-color: #9bd964;
}
main {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 15px;
}
.col1 {
    flex: 3;
    background-color: #f1f4f7;
    border: 10px solid #8f64d9;
    padding: 15px;
}
.col2 {
    flex: 1;
    border: 10px solid #9bd964;
    background-color: #f1f4f7;
    padding: 15px;
}
.col3 {
    flex: 1;
    background-color: #f1f4f7;
    border: 10px solid #d9a364;
    padding: 15px;
}
.row {
    display: flex;
    gap: 10px;
}
.top-section {
    background-color: #8f64d9;
    color: white;
    padding: 20px;
    text-align: center;
}
.col1 img {
    width: 100%;
    max-width: 300px;
    height: auto;
    float: right;
    margin: 10px;
}
footer {
    background-color: #6864d9;
    color: white;
    text-align: center;
    padding: 10px;
}
@media (max-width: 900px) {
    main {
        flex-direction: column;
    }
    nav {
        flex-wrap: wrap;
    }
}
@media (max-width: 510px) {
    nav {
        flex-direction: column;
        align-items: center;
    }
    main {
        flex-direction: column;
    }
    .col1 img {
        float: none;
        display: block;
        margin: auto;
    }
}