.content {
  width: 960px;
  max-width: 100%;
  margin: 0 auto;
}

.flex {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-start;
}

.flex img {
  width:30%;
  height: auto;
  margin-right: 5%;
}

.blur0 {
  filter: blur(0px);
}
.blur5 {
  filter: blur(5px);
}
.blur10 {
  filter: blur(10px);
}

.enable-drop-shadow {
  filter: drop-shadow(10px 10px 10px rgba(0, 0, 0, .5));
}

.contrast0 {
  filter: contrast(0%);
}
.contrast50 {
  filter: contrast(50%);
}
.contrast100 {
  filter: contrast(100%);
}

.grayscale0 {
  filter: grayscale(0%);
}
.grayscale50 {
  filter: grayscale(50%);
}
.grayscale100 {
  filter: grayscale(100%);
}

.sepia0 {
  filter: sepia(0%);
}
.sepia50 {
  filter: sepia(50%);
}
.sepia100 {
  filter: sepia(100%);
}

.opacity0 {
  filter: opacity(0%);
}
.opacity50 {
  filter: opacity(50%);
}
.opacity100 {
  filter: opacity(100%);
}

.saturate0 {
  filter: saturate(0%);
}
.saturate50 {
  filter: saturate(50%);
}
.saturate100 {
  filter: saturate(100%);
}

.brightness0 {
  filter: brightness(0%);
}
.brightness50 {
  filter: brightness(50%);
}
.brightness100 {
  filter: brightness(100%);
}

.hue-rotate0 {
  filter: hue-rotate(0deg);
}
.hue-rotate180 {
  filter: hue-rotate(180deg);
}
.hue-rotate270 {
  filter: hue-rotate(270deg);
}

.invert0 {
  filter: invert(0%);
}
.invert50 {
  filter: invert(50%);
}
.invert100 {
  filter: invert(100%);
}