src/email.css

<style type="text/css">
body {
  font-family: Arial, Helvetica, sans-serif;
}
a {
        color: #ff9900;
        font-weight: bold;
        font-family: Arial, Helvetica, sans-serif;
}
hr {
  border-color: #0066cc;
}
#header_table, #image_table {
  border-collapse: collapse;
  border-style:none;
  width:100%;
  line-height: 150%;
  table-layout:auto;
}
#empty_cell {
  width:100%;
  font-family: Arial, Helvetica, sans-serif;
}
#from_row {
}
header_row_odd {
  background-color: white;
  font-family: Arial, Helvetica, sans-serif;
}
#to_row {
}
header_row_even {
  background-color: white;
  font-family: Arial, Helvetica, sans-serif;
}
#cc_row {
  font-family: Arial, Helvetica, sans-serif;
}
#bcc_row {
  font-family: Arial, Helvetica, sans-serif;
}
#date_row {
  font-family: Arial, Helvetica, sans-serif;
}
#subject_row {
  font-family: Arial, Helvetica, sans-serif;
}
#attach_row {
  font-family: Arial, Helvetica, sans-serif;
}
#rfcheaders_row {
  font-family: Arial, Helvetica, sans-serif;
}
#from_caption, #to_caption, #cc_caption, #bcc_caption, #date_caption, #subject_caption, #attach_caption, #rfcheaders_caption {
  font-weight: bolder;
  color: #0066cc;
  text-align: right;
  padding-right:16px;
  padding-left:16px;
  vertical-align: text-top;
  font-family: Arial, Helvetica, sans-serif;
}
#from_text, #to_text, #cc_text, #bcc_text, #date_text, #subject_text, #rfcheaders_text {
  -space: nowrap;
  width: 100%;
  font-family: Arial, Helvetica, sans-serif;
}
#attach_text {
  width: 100%;
  font-family: Arial, Helvetica, sans-serif;
}
#msg_body {
  border-style:none;
  word-wrap:break-word;
  padding: 8px 8px 8px 8px;
  transform: scale(1);
  font-family: Arial, Helvetica, sans-serif;
}
#attach_table {
  border-style:none;
  background-color: white;
  -space: nowrap;
  font-family: Arial, Helvetica, sans-serif;
}