body {
   margin: 10px auto;
   padding: 0;
   font-family: "Noto Sans JP";
}

.logo{
    margin: 20px auto;
    width: 30%;
    max-width: 300px;
    height: auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (max-width: 768px) {
  .logo {
    width: 70%;
    max-width: 250px;
    margin: 15px auto;
  }
}

@media (max-width: 480px) {
  .logo {
    width: 80%;
    max-width: 200px;
    margin: 10px auto;
  }
}

.author_line{
    margin: 10px auto;
    width: 30%;
    max-width: 400px;
    font-size: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

@media (max-width: 768px) {
  .author_line {
    width: 80%;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .author_line {
    width: 95%;
    font-size: 12px;
  }
}

header{
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    gap: 30px;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 10px;
  }
}

.image_size{
    width: 50%;
    height: 12%;
}

@media (max-width: 768px) {
  .image_size {
    width: 80%;
    max-width: 400px;
  }
}

@media (max-width: 480px) {
  .image_size {
    width: 80%;
    max-width: 400px;
  }
}

.title{
    text-align: center;
    font-size: 40px;
    margin: 20px 0;
}

@media (max-width: 768px) {
  .title {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .title {
    font-size: 18px;
    margin: 15px 0;
  }
}

hr{
    border-top: 3px double #aaa; width: 50%;
}

@media (max-width: 768px) {

  hr{
    width: 80%;
    border-top: 3px double #aaa; 
  }
}

@media (max-width: 480px) {

  hr{
    width: 95%;
    border-top: 3px double #aaa; 
  }
}


.note_line{
    margin: 20px auto;
    background-color: #ffe2e2;
    width: 45%;
    max-width: 600px;
    padding: 15px;
    box-sizing: border-box;
    border-radius: 8px;
}

@media (max-width: 768px) {
  .note_line {
    width: 80%;
    padding: 12px;
  }
}

@media (max-width: 480px) {
  .note_line {
    width: 95%;
    padding: 10px;
  }
  
  .note_line h2 {
    font-size: 16px;
    line-height: 1.5;
  }
}



.content_table_line{
    padding-top: 5%;
    margin: 0 auto;
    text-align: left;
    width: 50%;
    max-width: 800px;
    font-size: 35px;
}

@media (max-width: 768px) {
  .content_table_line {
    width: 80%;
    font-size: 20px;
    padding-top: 15px;
  }
}

@media (max-width: 480px) {
  .content_table_line {
    width: 95%;
    font-size: 16px;
    padding-top: 10px;
  }
}
.main_text_line{
    margin: 0 auto;
    width: 50%;
    max-width: 800px;
}

@media (max-width: 768px) {
  .main_text_line {
    width: 80%;
  }
}

@media (max-width: 480px) {
  .main_text_line {
    width: 95%;
  }
}

.main_text{
    margin-left: 5%;
    font-size: 25px;
    line-height: 1.6;
}

@media (max-width: 768px) {
  .main_text {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .main_text {
    font-size: 14px;
    line-height: 1.5;
    margin-left: 3%;
  }
}