*, *:after, *:before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

* {
  position: relative;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: url("Half_Dome_from_Glacier_Point%2C_Yosemite_NP_-_Diliff.jpg") 50% no-repeat fixed;
  -webkit-background-size: cover;
  background-size: cover;
  font: 14px/1.2 'Helvetica Neue', Helvetica, sans-serif;
}

h2 {
  font-size: 1.4em;
}

p {
  margin-bottom: 0.4em;
}

article {
  width: 300px;
  position: absolute;
  top: 100px;
  left: 40px;
  background: inherit;
  border-radius: 6px;
  -webkit-box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}
article:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: inherit;
  -webkit-filter: blur(10px) saturate(2);
}
article .title {
  padding: 8px;
  background: rgba(225, 225, 225, 0.5);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  text-align: center;
}
article .content {
  padding: 8px;
  background: rgba(255, 255, 255, 0.5);
}

.attr {
  position: fixed;
  right: 5px;
  bottom: 5px;
  font-size: 0.8em;
  color: white;
}