How to Add Dash Notification Panel in Blogger Post

<div>

<style>

.gt-box {

border: 2px dashed #ff0202;

padding: 12px;

border-radius: 10px 10px 10px 10px;

-webkit-border-radius: 10px 10px 10px 10px;

-moz-border-radius: 10px 10px 10px 10px;

}

</style>

<div class="gt-box">

<p>Dash Notification Panel</p>

</div>

</div>

</div>