Defining the CSS

Now that we have some basic HTML, we need to create a new shell.css file. Without any CSS styling, our page looks pretty terrible.

A page without styling will be similar to the one shown as follows:

Figure 2.1: The Hello WebAssembly app without a CSS style

Luckily for us, a little bit of CSS goes a long way to make our web page look presentable. Here is what the new shell.css file we are creating looks like:

body {
    margin-top: 20px;
}

.input_box {
    width: 20%;
    display: inline-block;
}
.em_button {
    width: 45%;
    height: 40px;
    background-color: orangered;
    color: white;
    border: 2px solid white;
    font-size: 20px;
    border-radius: 8px;
    transition-duration: 0.5s;
}

.em_button:hover {
    background-color: orange;
    color: white;
    border: 2px solid white;
}

.em_input {
    width: 45%;
    height: 20px;
    font-size: 20px;
    background-color: darkslategray...