body {
  font-family: "Arial", sans-serif;
  background-color: #2c3e50;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  height: auto;
  width: 100%;
  margin: 0;
  padding: 0;
}
header,
footer {
  width: 100%;
}
.header-container.cover {
  position: relative;
  background-image: url(../images/company.jpeg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.header-container.cover::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%; /* 高さを100%に変更して要素全体を覆う */
  background-color: rgba(0, 0, 0, 0.3); /* 黒の半透明色 */
  z-index: 1; /* 背景画像より前面に表示 */
}

/* 子要素は背景オーバーレイよりも前面に表示 */
.header-container * {
  position: relative;
  z-index: 2;
}

.header-container * {
  position: relative;
  z-index: 2; 
}
.header-container h1{
  width: 50%;
  padding-top: 25%;
  border-bottom: #fff 3px solid;
  padding-left: 15%;
}
.toptxt{
  padding-top: 10px;
  padding-bottom: 150px;
  padding-left: 15%;
}
.container {
  color: white;
  padding: 30px;
  width: 800px;
  border-radius: 10px;
}
main{
  margin-left: 15%;
  margin-right: 15%;
}
.container {
  width: 90%; 
  margin: 0 auto; 
  text-align: left; 
}
.info-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  width: 100%;
}

.label {
  font-weight: bold;
  width: 20%;
  border-bottom: 1px solid rgb(0, 89, 255);
  padding-bottom: 5px;
  display: flex;
  align-items: center;
}

.content {
  width: 100%;
  border-bottom: 1px solid #fff;
  padding-bottom: 15px;
}
.content img{
  width: 150px;
  height: auto;
}
.registration-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.registration-list li {
  line-height: 1.8;
  text-align: left;
}
.mobile{
  display: none;
}
.not{
  user-select: none;
}
@media screen and (max-width: 765px) {
  main{
    margin: 0;
  }
  .header-container h1{
    width: 100%;
    padding: 0;
    padding-top: 150px;
    text-align: center;
    border: 0px solid white;
}
  .toptxt{
    padding: 0;
    padding-top: 10px;
    padding-bottom: 100px;
    text-align: center;
  }
  .container{
    width: 100%;
    padding: 0;
    margin-bottom: 50px;
    margin-top: 25px;
  }
  .label {
    font-weight: bold;
    width: 40%;
    border-bottom: 1px solid rgb(0, 89, 255);
    padding-bottom: 5px;
    padding-left: 10px;
    display: flex;
    align-items: center;
  }
  .content{
    padding-left: 5px;
  }
  .mobile{
    display: block;
}
}