#content {
  background-color: #f9f9f9;
  border-radius: 8px;
  padding: 5px;
  margin: 20px auto;
  width: 20em;
  font-family: 'Arial', sans-serif;
  font-size: 14px;
  color: #333333;
  text-align: justify;
}

#name {
  text-align: center;
  font-weight: 700;
  font-size: 28px;
  margin-bottom: 25px;
  color: #2C3E50;
  font-family: 'Arial Black', Arial, sans-serif;
}

.btn {
  display: inline-block;
  background-color: #4a90e2;
  color: white;
  padding: 10px 18px;
  margin: 0 10px 10px 10px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s ease;
  box-shadow: 0 3px 6px rgba(74, 144, 226, 0.4);
  text-align: center;
}

.btn:hover {
  background-color: #357ABD;
  box-shadow: 0 5px 10px rgba(53, 122, 189, 0.6);
}

.core {
  display: flex;
  justify-content: center;
}

#left,
#right {
  display: none;
}

#center {
  margin: 0 auto;
  text-align: center;
}

@media screen and (max-width: 800px) {
  #content {
    font-size: 14px;
    padding: 10px;
    max-width: 100%;
    margin: 10px auto;
    text-align: justify;
  }

  #name {
    font-size: 22px;
    margin-bottom: 15px;
    margin-top: 10px;
  }

  .btn {
    padding: 8px 14px;
    font-size: 14px;
    margin: 0 10px 10px 10px;
    display: inline-block;
  }

  #left,
  #right {
    display: none;
  }

  #center {
    padding-left: 10px;
    padding-right: 10px;
    max-width: 100%;
  }
}