body{
  font-family: raleway;
}

header{
  font-style: normal;
  font-variant: normal;
  font-size: 30px;
  text-align: center;
  letter-spacing: 10px;
  line-height: 0.5;
  margin-bottom: 60px;
}

* {
  box-sizing: border-box;
}

.column video {
  margin-top: 10px;
  vertical-align: middle;
  width: 100%;
}

.row {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  padding: 0 5px;
}

.column {
  -ms-flex: 25%;
  flex: 25%;
  max-width: 25%;
  padding: 0 5px;
}

.column img {
  margin-top: 10px;
  vertical-align: middle;
  width: 100%;
}

@media screen and (max-width: 1500px) {
  .column {
    -ms-flex: 50%;
    flex: 50%;
    max-width: 50%;}
}

@media screen and (max-width: 1000px) {
  .column {
    -ms-flex: 100%;
    flex: 100%;
    max-width: 100%;}
}

.navbar {
  margin-top: 80px;
  width: 100%;
  overflow: auto;
}

.navbar a {
  float: left;
  padding: 12px;
  color: black;
  text-decoration: none;
  font-size: 18px;
  width: 33.33%;
  text-align: center;
  letter-spacing: 3px;
}

.navbar a:hover {
  color: white;
}