A simple responsive CSS..

My solution to exercise in Chapter 2 of the Coursera course HTML, CSS and Javascript for Web Developers.

I do not understand why they included the "for Web Developers" parts. For whom else would this course be?

Anyway, here is my abc.html
<!doctype html>
<html>
<head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <title>Coursera HTML/CSS</title>
    <link rel="stylesheet" href="menu.css"/>
</head>
<body>
    <div class="row">
        <h1>Our Menu</h1>
        <div class="col">
            <div class="menu-card">
                <div class="item-title">
                    Beef
                </div>
                <p class="item-content">
                    Lorem ipsum..
                </p>
            </div>
        </div>
        <div class="col">
            <div class="menu-card">
                <div class="item-title">
                    Beef
                </div>
                <p class="item-content">
                    Lorem ipsum..
                </p>
            </div>
        </div>
        <div class="col">
            <div class="menu-card">
                <div class="item-title">
                    Beef
                </div>
                <p class="item-content">
                    Lorem ipsum..
                </p>
            </div>
        </div>    
    </div>
</body>
</html>

And menu.css
* {
    box-sizing: border-box;
    padding: 0px;
    margin: 0px;
}
 
h1 {
    margin-bottom: 5px;
    text-align: center;
    background-color: whitesmoke;
}
 
.col {
    border: 1px dashed;
}
.menu-card {
    position: relative;
    background-color: lightgray;
    margin: 10px;
    padding: 10px;
    border: 2px solid black;
}
 
.item-title {
    position: absolute;
    top: 0px;
    right: 0px;
    border-bottom: 2px solid maroon;
    border-left: 2px solid maroon;
    background-color: azure;
    text-align: center;
    font-size: large;
    font-weight: bold;
    width: 200px;
}
 
.item-content {
    clear: right;
    padding-top: 20px;
}
 
/* Simple Responsive Framework. */
.row {
    width: 100%;
}
 
/********** Large devices only **********/
@media (min-width: 992px) {
    .col {
        float: left;
        width: 33.33%;
    }
}
 
/********** Medium devices only **********/
@media (min-width: 768px) and (max-width: 991px) {
    .col {
        float: left;
        width: 50%;
    }
}
 
@media (min-width: 0px) and (max-width: 768px) {
    .menu-card {
        margin-top: 10px;
        margin-bottom: 10px;
    }
}

And a few screenshots: