blog.css - строка 58, закомментируйте свойства background
background: #F8FAFB; /* Old browsers */
background: -moz-linear-gradient(top, #F8FAFB 0%, #ffffff 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#F8FAFB), color-stop(100%,#ffffff)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #F8FAFB 0%,#ffffff 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #F8FAFB 0%,#ffffff 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #F8FAFB 0%,#ffffff 100%); /* IE10+ */
background: linear-gradient(to bottom, #F8FAFB 0%,#ffffff 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#F8FAFB', endColorstr='#ffffff',GradientType=0 ); /* IE6-9 */