main.css

body {
  margin: 0 auto;
  max-width: 1000px;
  display: block;
  font-family: sans-serif;
  font-size: 15px;
  overflow-x: hidden;
}

#header {
  padding: 30px 10px 10px 10px;
}
.title {
  font-family: 'Chonburi', sans-serif;
  font-size: 2em;
}
#desc {
  position: absolute;
  padding: 10px;
  background-color: white;
}
#desc span {
  background-color: #E60268;
  color: white;
}
#main {
  width: 100%;
  margin: 0 auto;
}

.logos {
  width: 49%;
  vertical-align: middle;
  display: inline-flex;
  align-items: center;
}
.logo {
  position: relative;
  display: inline-block;
  vertical-align: middle;
  background-size: cover;
  background-repeat:no-repeat;
  background-position: center center;
}
.logo a span {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
}
.right {
  justify-content: flex-end;
}
.spacer {
  width: 10px;
}
.mayday {
  background-image: url('images/logo_mayday1@2x.png');
  background-color: #f9dc61;
  width: 50px;
  height: 50px;
}
.boonmeelab {
  background-image: url('images/logo_boonmeelab_small.png');
  width: 50px;
  height: 50px;
}
.ted {
  background-image: url('images/logo-tedxbangkoklogo.png');
  width: 125px;
  height: 32px;
}