I updated this custom CSS:
.plain-style .contact-box.box-bg {
background: none !important;
border-top: 2px solid #d1c9c6 !important;
border: 1px solid #ebebeb;
}
.plain-style .contact-box.box-bg h3 {
color: #dedcda;
border-bottom: 1px solid #ebebeb;
}