.w1100 {

  width: 1100px;

  margin: 0 auto;

}

.assessment {

  margin-top: 115px;

}

.assessment .content li {

  float: left;

  width: 300px;

  background-color: #fff;

  margin: 0 66px 20px 0;

}

.assessment .content li img {

  width: 100%;

  height: 200px;

}

.assessment .content li p {

  font-size: 18px;

  text-align: center;

  padding: 20px 0;

  box-sizing: border-box;

}