<style>
    .content {
        background: #f9f9f9;
        margin: 20px;
        width:100%;
    }

    .btn {
        display: inline;
        font-size: 14px;
        padding: 14px;
        cursor: pointer;
        border: none;
        color: white;
        background-color: #1696d2;
        display: block;
        line-height: 12px;
        text-transform: uppercase;
        text-align: center;
        float: right;
        margin: 5px;
    }

    .btn selected {
        background-color: #ccc;
        border: black;
    }

 .show, .hide {
        margin: 0 auto;
        margin-top: 0px;
        position: relative;
        width: 100%;
        height: 400px;
    }

    .btn:hover {
        background-color: white;
         color:#1696d2;
        border:#1696d2;
    }

 
    .clearfix:before,
    .clearfix:after {
        content: ' ';
        display: block;
    }

    .clearfix:after {
        clear: both;
    }

    .clearfix {
        *zoom: 1;
    }

    .hide {
        display: none;
    }
    .show {
        display: block;
    }

</style>