/* Structure */
body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: gray;
}
header h1, h2 {
    text-align: center;
}
footer p {
    text-align: center;
}
#col1of5 {
    
    display: block;
    margin-left: auto;
    margin-right: auto;
    padding: 10px;
}
#col1of5 img {
    width: 60%;
    height: 70%;
    margin-left: auto;
    margin-right: auto;
    display: block;
}
#col1of5 h4 {
    text-align: center;
}
#col1of5 a{
    text-decoration: none;
}

/* Modal */
.w3-container {
    background-color: green;
}
.mod img {
    width: 60%;
    height: 60%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 20px;
}


@media (min-width: 1100px){
    .main-flex {
        display: flex;
    }
    #col1of5 {
        flex: 1;
    }
}