moodle/mod/quiz/styles.php

.quiz-report-title {
  text-align: center;
  font-weight : bold;
}

.grade {
  font-size: small;
  margin-top: 10pt
}
.gradingdetails {
  font-size: small;
}


body#mod-quiz-report table#itemanalysis {
  margin: 20px auto;
}
body#mod-quiz-report table#itemanalysis .header,
body#mod-quiz-report table#itemanalysis .cell
{
  padding: 4px;
}
body#mod-quiz-report table#itemanalysis .header .commands {
  display: inline;
}
body#mod-quiz-report table#itemanalysis td {
  border-width: 1px;
  border-style: solid;
}
body#mod-quiz-report table#itemanalysis .header {
  text-align: left;
}
body#mod-quiz-report table#itemanalysis .numcol {
  text-align: center;
  vertical-align : middle !important;
}

body#mod-quiz-report table#itemanalysis .uncorrect {
  color: red;
}

body#mod-quiz-report table#itemanalysis .correct {
  color: blue;
  font-weight : bold;
}

body#mod-quiz-report table#itemanalysis .partialcorrect {
  color: green !important;
}

body#mod-quiz-report table#itemanalysis .qname {
  color: green !important;
}