Implement blocksticky-bottom style

Summary

Implement block-sticky-bottom style with the following characteristics:

.block-sticky-bottom{

position: fixed;
bottom: 0;
z-index: 500 !important;
width: 100%;
opacity: 0.9;

.block-content{
    padding: 10px 10px;

    p{
      margin: 0;
     }
}
}