.club {
  display: flex;
  flex-wrap: wrap;
  margin: auto;
  max-width: 1000px;
}

.club_outer {
  border: #555 solid 2px;
  display: flex;
  flex-wrap: nowrap;
  position: relative;
  z-index: 0;
  width: 46%;
  margin: 30px auto;
  padding: 20px;
  padding-right: 15px;
  text-align: left;
  align-items: center;
}

.club_outer::before {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 0;
  height: 0;
  border-top: transparent solid 20px;
  border-right: #555 solid 20px;
  content: "";
  z-index: 1;
}

.club_outer::after {
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 0;
  height: 0;
  border-top: transparent solid 21px;
  border-right: #f5f5f5 solid 21px;
  content: "";
  z-index: 2;
}

.club_info {
  margin-left: 20px;
}

.club_logo {
  width: 100px;
  height: 100px;
}

.club_logo img {
  width: 100px;
  height: 100px;
}

.club_name {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.club_desc p {
  margin: 0.5rem 0;
}

.youtube::before {
  display: inline-block;
  font-style: normal;
  font-variant: normal;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  font-family: "Font Awesome 5 Brands";
  font-weight: 400;
  content: "\f167";
  color: #f00;
}

/* 900px以下 タブレット用 */
@media screen and (max-width: 900px) {
  .club_logo {
    width: 50px;
    height: 50px;
  }

  .club_logo img {
    width: 50px;
    height: 50px;
  }
}

/* 600px以下 スマホ用 */
@media screen and (max-width: 600px) {
  .club_outer {
    width: 90vw;
    max-width: 500px;
  }

  .club_name {
    font-size: 1rem;
  }

  .club_desc {
    font-size: 0.8rem;
  }
}