#certificates {
  text-align: center;
}
#certificates .flex-container {
  justify-content: center;
}
#certificates .hidden {
  display: none;
}
#certificates .sub-titles {
  text-align: center;
  padding-bottom: 20px;
}
#certificates .sub-titles .sub-title {
  display: inline;
  color: #181e52;
  cursor: pointer;
}
#certificates .sub-titles .sub-title:first-child {
  color: #ffa547;
}
#certificates .sub-titles .sub-title-delimiter {
  display: inline;
  font-size: 22px;
  color: black;
  font-weight: bold;
  padding: 0 25px;
}
#certificates .sub-titles .sub-title:hover {
  color: #181e52;
}
#certificates .cert.big-screen {
  width: 200px;
  height: 200px;
  margin: 30px;
}
#certificates .cert.big-screen.mcsd {
  background: url(../img/certs/MCSD.png);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates .cert.big-screen.mcsa {
  background: url(../img/certs/MCSA.png);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates .cert.big-screen.ms489 {
  background: url(../img/certs/489.png);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates .cert.big-screen.ms488 {
  background: url(../img/certs/488.png);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates .cert.big-screen.ms486 {
  background: url(../img/certs/486.png);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates .cert.big-screen.ms480 {
  background: url(../img/certs/480.png);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates .cert.big-screen.edb-pg-a {
  background: url(../img/certs/EDB_PG_A.png);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates .cert.small-screen {
  padding: 0 20px;
  text-align: left;
}
#certificates #course-items .course.big-screen {
  width: 500px;
  height: 354px;
  margin: 30px;
}
#certificates #course-items .course.small-screen {
  padding: 0 20px;
  text-align: left;
}
#certificates #course-items .course_1 {
  background: url(../img/courses/course_1.jpg);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates #course-items .course_2 {
  background: url(../img/courses/course_2.jpg);
  background-size: contain;
  background-repeat: no-repeat;
}
#certificates #course-items .course_3 {
  background: url(../img/courses/course_3.jpg);
  background-size: contain;
  background-repeat: no-repeat;
}
@media screen and (max-width: 800px) {
  #certificates .sub-titles .sub-title-delimiter {
    padding: 0 10px;
  }
}