.textarea-primary {
  display: inline-block;
  vertical-align: top;
  width: 85%;
  max-height: 170px;
  padding: 8px;
  box-sizing: border-box;
  border-radius: 5px;
  border: 1px solid #e5e5e5;
  font-size: 14px;
  outline: none;
  line-height: 1.6;
  resize: vertical;
}


/*以下、①背景色など*/
.line-bc {
  padding: 20px 10px;
  max-width: 100％;
  margin: 15px auto;
  text-align: right;
  font-size: 16px;
  background: #41e1b6;

}


/*以下、②左側のコメント*/
.balloon6 {
  width: 100%;
  margin: 10px 0;
  overflow: hidden;
}

.balloon6 .faceicon {
  float: left;
  margin-right: -50px;
  width: 40px;
}

.balloon6 .faceicon img{
  width: 100%;
  height: auto;
  border-radius: 50%;
}
.balloon6 .chatting {
  width: 100%;
  text-align: left;
}
.says {
  display: inline-block;
  position: relative; 
  margin: 0 0 0 50px;
  padding: 10px;
  max-width: 250px;
  border-radius: 12px;
  background: #edf1ee;
}

.says:after {
  content: "";
  display: inline-block;
  position: absolute;
  top: 3px; 
  left: -19px;
  border: 8px solid transparent;
  border-right: 18px solid #edf1ee;
  -webkit-transform: rotate(35deg);
  transform: rotate(35deg);
}
.says p {
  margin: 0;
  padding: 0;
}

/*以下、③右側の緑コメント*/
.mycomment {
  margin: 10px 0;
}
.mycomment p {
  display: inline-block;
  position: relative; 
  margin: 0 10px 0 0;
  padding: 8px;
  max-width: 250px;
  border-radius: 12px;
  background: #30e852;
  font-size: 15px:
}

.mycomment p:after {
  content: "";
  position: absolute;
  top: 3px; 
  right: -19px;
  border: 8px solid transparent;
  border-left: 18px solid #30e852;
  -webkit-transform: rotate(-35deg);
  transform: rotate(-35deg);
}


.example{
  width: 10em;
  height:3em;
}

iframe{

width:100%;

height:600px;

}