Hello There,
Thanks for updating in!
You can upload a bigger image and modify the css you are using. You will have to remove this code first:
.entry-featured .entry-thumb:before {
content: url(http://padthai.decorolux.com/wp-content/uploads/2017/09/logofinalv3.png);
}
You will have to replace it with this code instead:
.entry-featured .entry-thumb:before {
content: "";
background-color: #fff;
background-image: url(http://padthai.decorolux.com/wp-content/uploads/2017/09/logofinalv3.png);
background-position: center center;
background-repeat: no-repeat;
background-size: 70%;
}
And the code above already include the change of the background color:
Hope this helps. Please let us know how it goes.