:root {
  --black: 51,51,51;
  --red: 238,0,59;
  --dark_red: 207,28,85;
  --main: 233,83,131;
  --accent: 227,55,129;
  --note: 102,102,102;
  --bg: 243,243,243;
  --gray: 153,153,153;
  --dark_gray: 167,167,167;
  --border: 210,211,212;
  --light_pink: 252,229,237;
  --beige: 248,244,241;
  --green: 92,198,172;
  --blue: 16,120,237;
  --purple: 189,104,200;
  --light_purple: 242,228,243;
  --contents_width: 1100px;
  --body_padding_side: 60px;
  --contents_width_with_padding: 1160px;
  --sidebar_width: 250px;
  --hover_opacity: .7;
}

/* .column
================================================ */
.column__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 15px;
}
@media all and (min-width: 768px) {
  .column__list {
    grid-template-columns: repeat(4, 1fr);
    gap: 40px 30px;
  }
}
.column__item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.column__item.is-show {
  opacity: 1;
  transform: translateY(0);
}
.column__item-date {
  line-height: 1.4;
}
.column__item-img img {
  width: 100%;
  aspect-ratio: 3/2;
  -o-object-fit: cover;
  object-fit: cover;
}
.column__item-date {
  font-size: 1.4rem;
  margin-top: 10px;
}
@media all and (min-width: 768px) {
  .column__item-date {
    font-size: 1.6rem;
    margin-top: 15px;
  }
}
.column__item-title {
  font-size: 1.4rem;
  line-height: 1.6;
}
@media all and (min-width: 768px) {
  .column__item-title {
    font-size: 1.6rem;
    margin-top: 3px;
  }
}