Customizing DIVI Testimonial module with a horizontal line

Name the CSS Class of the Module "testimonial-line".
Use this CSS Code: 
.testimonial-line .et_pb_testimonial_author {
margin-top: 35px !important;
.testimonial-line .et_pb_testimonial_description_inner::after {
content: "";
position: absolute;
text-align: center;
width: 40%;
margin-top: -40px;
border-top: 1px solid #939290;
-webkit-transform: translateX(-50%);
-ms-transform: translateX(-50%);
transform: translateX(-50%);

Reduce padding from DIVI Blog Grid Layout

The blog module in grid mode seems to be adding padding between rows of posts. To reduce this padding, add the following CSS code to your custom CSS (Divi > Theme Options > General tab > Custom CSS box.

.et_pb_gutters1.et_pb_row .et_pb_column .et_pb_blog_grid .column.size-1of3 .et_pb_post:last-child {
margin-bottom: 0 !important;