MediaWiki:Common.css

/** CSS placed here will be applied to all skins */

/* Article message box template styles */
table.ambox {
  width: 80%; 
  margin: 0 auto;
  border-collapse: collapse; 
  background: #fbfbfb; 
  border: 1px solid #aaa; 
  border-left: 10px solid #1e90ff;       /* Default "notice" blue */
}
table.ambox th, table.ambox td {      /* The message body cell(s) */
  padding: 0.25em 0.5em;              /* 0.5em left/right */
}
table.ambox td.ambox-image {          /* The left image cell */
  width: 52px; 
  padding: 2px 0px 2px 0.5em;         /* 0.5em left, 0px right */
  text-align: center; 
}
table.ambox td.ambox-imageright {     /* The right image cell */
  width: 52px; 
  padding: 2px 4px 2px 0px;           /* 0px left, 4px right */
  text-align: center; 
}
table.ambox-notice {
  border-left: 10px solid #1e90ff;       /* Blue */
/* border-right: 10px solid #1e90ff; */  /* If you want two blue bars */
}
table.ambox-delete,
table.ambox-serious {
  border-left: 10px solid #b22222;       /* Red */
}
table.ambox-content {
  border-left: 10px solid #f28500;       /* Orange */
}
table.ambox-style {
  border-left: 10px solid #f4c430;       /* Yellow */
}
table.ambox-merge {
  border-left: 10px solid #9932cc;       /* Purple */
}
table.ambox-protection {
  border-left: 10px solid #bba;          /* Gray */
}
table.ambox.ambox-mini {                 /* small floating box variant */
    float: right;
    clear: right;
    margin: 0 0 0 1em;
    width: 25%;
}