* img {
  width: 100%;
}

.intro_vol > p:nth-child(1) {
  font-size: 40px;
  font-weight: 700;
}
.intro_vol > p:nth-child(2) {
  font-size: 24px;
  line-height: 50px;
}
.under_line {
  width: 40px;
  height: 5px;
  background-color: #205e14;
  margin: 40px auto;
}
.volun_for_img {
  width: 80%;
  margin: auto;
  margin-top: 70px;
}

/* value */
.small_title {
  font-size: 32px;
  font-weight: 600; /* Semi Bold */
  margin-top: 150px;
}
.value_img {
  margin-bottom: 30px;
}
.value_img > img {
  width: 30%;
  margin: auto;
}
.value_img > p > span:nth-child(1) {
  font-size: 18px;
  color: #a7a7a7;
  line-height: 25px;
}
.value_img > p > span:nth-child(2) {
  font-size: 24px;
  font-weight: 700;
  line-height: 40px;
}
.value_img > p > span:nth-child(3) {
  font-size: 20px;
  line-height: 30px;
}
/*Activities*/
.v-line {
  border-left: 10px solid #205e14;
  height: 26px;
  text-align: left;
}
.v-line > span:nth-child(1) {
  margin-left: 10px;
  font-size: 26px;
}
.vol_pic {
  margin-top: 50px;
}
.vol_pic > p {
  margin-top: 10px;
  font-size: 20px;
  line-height: 30px;
  text-align: left;
}

.vol_pic img {
  width: 80%;
}

@media (max-width: 640px) {
  .sub_inner {
    width: 90%;
    margin: 0 5%;
  }
  .intro_vol > p:nth-child(1) {
    font-size: 32px;
    font-weight: 700;
  }
  .intro_vol > p:nth-child(2) {
    font-size: 20px;
    line-height: 50px;
  }
  .under_line {
    width: 40px;
    height: 4px;
    background-color: #205e14;
    margin: 20px auto;
  }
  .volun_for_img {
    width: 100%;
    margin: auto;
    margin-top: 40px;
  }
  /* value */
  .small_title {
    font-size: 26px;
    font-weight: 600; /* Semi Bold */
    margin-top: 80px;
  }
  .value_img {
    margin-bottom: 30px;
  }
  .value_img > img {
    width: 60%;
    margin: auto;
  }
  .value_img > p > span:nth-child(1) {
    font-size: 14px;
    color: #a7a7a7;
    line-height: 20px;
  }
  .value_img > p > span:nth-child(2) {
    font-size: 20px;
    font-weight: 700;
    line-height: 40px;
  }
  .value_img > p > span:nth-child(3) {
    font-size: 17px;
    line-height: 20px;
  }
  /*Activities*/
  .v-line {
    border-left: 8px solid #205e14;
    height: 22px;
    text-align: left;
  }
  .v-line > span:nth-child(1) {
    margin-left: 8px;
    font-size: 20px;
  }
  .vol_pic {
    margin-top: 30px;
  }
  .vol_pic > p {
    margin: 10px 0;
    font-size: 17px;
    line-height: 20px;
    text-align: left;
  }
}

@media (max-width: 1024px) {
  .vol_pic img {
    width: 90%;
  }
}

@media (min-width: 641px) {
  .introduction > .ansan_inner {
    width: 80%;
  }
}