style_.css

*,
:after,
:before {
    box-sizing: border-box;
}

a:link {
    text-decoration: none;
}

a:visited {
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

a:active {
    text-decoration: none;
}

.row::after {
    content: "";
    clear: both;
    display: block;
}

[class*="col-"] {
    float: left;
    padding: 15px;
}

html {
    font-family: "Lucida Sans", sans-serif;
}

.header {
    background-color: #e1e0e3;
    color: #201e23;
    padding: 15px;
}

.art-image {
    background-image: url("/images/coding.jpeg");
    background-color: #cccccc;
    height: 500px;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;

}

.art-text {
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
}

.menu ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.menu li {
    padding: 1px 1rem;
    margin-bottom: 1px;

    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
}

li a {
    color: #33b5e5;
}

.aside {
    background-color: #33b5e5;
    padding: 15px;
    color: #ffffff;
    text-align: center;
    font-size: 14px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
}

.footer {
    background-color: #0099cc;
    color: #ffffff;
    text-align: center;
    font-size: 12px;
    padding: 15px;
}

/* For desktop: */
.col-1 {
    width: 8.33%;
}

.col-2 {
    width: 16.66%;
}

.col-3 {
    width: 25%;
}

.col-4 {
    width: 33.33%;
}

.col-5 {
    width: 41.66%;
}

.col-6 {
    width: 50%;
}

.col-7 {
    width: 58.33%;
}

.col-8 {
    width: 66.66%;
}

.col-9 {
    width: 75%;
}

.col-10 {
    width: 83.33%;
}

.col-11 {
    width: 91.66%;
}

.col-12 {
    width: 100%;
}

@media only screen and (max-width: 768px) {

    /* For mobile phones: */
    [class*="col-"] {
        width: 100%;
    }
}