body {
  background-color: #182178;
  color: #f5226f;
  font-family: "MS UI Gothic", "ＭＳ ゴシック", sans-serif;
  margin: 0;
  padding: 0;
}

@font-face {
  font-family: placeholder;
  src: url(https://files.catbox.moe/fl8i9o.ttf);
}

h1 {
  text-align: center;
  font-family: placeholder;
}

p {
  text-align: center;
}

.row::after {
  content: "";
  display: table;
  clear: both; 
}

.column {
  float: left;
  width: 33.33%;
  padding: 20px; 
  background-color: white;
  color: #333;
  box-sizing: border-box;
  min-height: 300px;
  border-right: 2px solid #e0e0e0;
}

.column:last-child {
  border-right: none;
}

@media screen and (max-width: 768px) {
  .column {
    width: 100%;
    margin: 10px 0;
  }
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: #004499;
}

.main-container {
  max-width: 1200px;
  margin: 20px auto;
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.main-container > p {
  color: #393744;
  text-shadow: none;
  font-size: 16px;
}