.cfg-btn {
        background-color: rgb(55, 181, 114);
        color: #fff;
        border: 0;
        box-shadow: 0 0 1px 0px rgba(0,0,0,0.3);
        outline:0;
        cursor: pointer;
        width: 200px;
        padding: 10px;
        font-size: 1.2em;
        position: relative;
        display: inline-block;
        margin: 10px auto;
    }
    .cfg-btn:hover:not([disabled]) {
        background-color: rgb(37, 215, 120);
    }
    .mobile-magic .cfg-btn:hover:not([disabled]) { background: rgb(55, 181, 114); }
    .cfg-btn[disabled] { opacity: .5; color: #808080; background: #ddd; }

    .cfg-btn.btn-preview,
    .cfg-btn.btn-preview:active,
    .cfg-btn.btn-preview:focus {
        font-size: 1.2em;
        position: relative;
        display: block;
        margin: 10px auto;
    }

    .cfg-btn,
    .preview,
    .app-figure,
    .api-controls{
        -webkit-box-sizing: border-box;
           -moz-box-sizing: border-box;
                box-sizing: border-box;
    }

   
    .preview {
        position: relative;
    }

    .api-controls {
        text-align: center;
    }
    .api-controls button,
    .api-controls button:active,
    .api-controls button:focus {
         width: 80px; font-size: .7em;
         white-space: nowrap;
    }

    .app-figure {
        width: 80% !important;
        margin: 0px auto;
        border: 0px solid red;
        padding: 20px;
        position: relative;
        text-align: center;
    }
    .selectors { margin-top: 10px; }
    .selectors .mz-thumb img { max-width: 56px; }

  
    .preview { width: 70%; float: left; }
    @media (min-width: 0px) {
        .preview { width: 100%; float: none; }
    }

    @media (min-width: 1024px) {
        .preview { width: calc(100% - 340px); }
    
    }
    @media screen and (max-width: 1024px) {
        .api-controls button, .api-controls button:active, .api-controls button:focus {
            width: 70px;
        }
    }
    @media screen and (max-width: 1023px) {
        .app-figure { width: 98% !important; margin: 50px auto; padding: 0; }
    }
    @media screen and (max-width: 600px) {
        .mz-thumb img { max-width: 39px; }
    }
    @media screen and (max-width: 560px) {
        .api-controls .sep { content: ''; display: table; }
    }
    @media screen and (min-width: 1600px) {
        .preview { padding: 10px 160px; }
    }