<!-- :disabled -->
<section class="example-cntr disabled">
    <h1>CSS <code>:disabled</code> pseudo-class</h1>
    <p>The <code>:disabled</code> pseudo-class targets a form element in the disabled state. An element in a disabled state can’t be selected, checked, activated or gain focus.</p>
    <p>As you can see none of these form elements can be used. Notice the <code>disabled</code> attribute in the HTML.</p>
    <form class="flex-ctnr">
        <div>
            <h3>Text Field</h3>
            <input type="text" disabled>
        </div>
        <div>
            <h3>Radio Button</h3>
            <input type="radio" disabled>
        </div>
        <div>
            <h3>Check Box</h3>
            <input type="checkbox" disabled>
        </div>
        <div>
            <h3>Text Area</h3>
            <textarea cols="30" rows="10" disabled></textarea>
        </div>
    </form>
</section>

//:disabled
.disabled {
    text-align: left;
    :disabled {
         opacity: .2;
    }
}



//Styling stuff not needed for demo
body { text-align: left; }
.example-cntr {
    max-width: 800px;
    margin: auto;
    padding: 20px 50px;    
    box-shadow: 0 1px 2px rgba(black,.3);
    background: rgba(black,.15);    
}
h1 {
    text-transform: none;
    border-bottom: #636363 1px dotted;
    code {
        display: inline-block;
        margin-bottom: 10px;
        color: $y;
        background: none;
        box-shadow: none;
    }
}
code { font-size: 1em; }
form {
    width: 100%;
    margin: 40px auto 20px;
    padding: 20px 10px;
    border-radius: 2px;
    font-size: 1.2em;
    text-align: center;
    background: rgba(black,.2);
}
input, label { cursor: pointer; }
input {
    width: 34px; height: 34px;
    vertical-align: middle;
    outline: none;
}
input[type=text],
input[type=email] { width: 100%; }
textarea {
    width: 100%;
    height: 50px;
}
label {
    padding: 3px 8px 5px;
    border-radius: 2px;
    border: transparent 1px solid;    
    transition: .5s;
    &:hover {
        border: rgba(white,.2) 1px solid;        
    }
}
h3 { font: italic 1em Georgia; }
.flex-ctnr {
    display: flex;
    justify-content: space-between;
    div { margin: 0 .5%; }
}