.column {
  float: left;
}
.first {
  position: sticky;
  top: 10px;
}

#bg {
  background-repeat: no-repeat;
  background-attachment: fixed; 
  background-size: cover;
  position: fixed;
  left: 0;
  top: 0;
  filter: blur(5px);
  height: 100%;
  width: 100%;
}

.content {
  position: absolute;
  z-index: 100;
  width: 100%;
  left: 0;
}

.second {
  border-radius: 10px;
}

.row:after {
  content: "";
  display: table;
  clear: both;
}
@media only screen and (max-width: 1300px) {
  .first {
    width: 805px;
    margin-left: 10%;
    margin-right: 10%;
    text-align: center; 
    position: relative;
  }
  .second {
    margin-top: 20px;
    width: 800px;
    margin-left: 10%;
    margin-right: 10%;
  }
  .third {
    width: 32%;
    margin-top: 5px;
    margin-right: 8px;
  }
}

@media only screen and (min-width: 1301px) {
  .first {
    width: 175px;
    margin-left: 8%;
  }
  .second {
    width: 800px;
    margin-left: 8%;
    margin-right: 0;
  }
} 

@media only screen and (min-width: 1600px) {
    .first {
      width: 200px;
      margin-left: 10%;
    }
    .second {
        width: 1000px;
        margin-left: 5%;
        margin-right: 5%;
    }
}