/* html{width: 1530;} */
html{width: 1510px;}



/* 3カラム */
main{display: flex;}
.left{width: 20%;}
.main_contents{
  width: 60%;
  border-left: solid 1px #0000002f;
  border-right: solid 1px #0000003b;
  padding: 20px;
}
.right{width: 20%;}




.problem_header{
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-bottom: 10px;
}
.problem_name{
  padding-left: 20px;
  font-size: xx-large;
  a{color: black;
    text-decoration: none;}
}
.sign{
  padding-right: 20px;
  font-size:x-large;
  a{color: black;
    text-decoration: none;}
}

.problem img{
  width: 800px;
  border: solid 1px #000000;
}
.problem{text-align: center;}






.user_btn_container{
  display: flex;
  float: right;
  padding-right: 50px;
  gap: 15px;
  align-items: center;
}


.btn{
  display: flex;
}


.favoriteButton{
  display: flex;
  align-items: center;
  cursor: pointer;
  width: auto;
  gap: 10px;
  img{width: 25px;}
}


.marking{
  gap: 8px;
  display: flex;
  align-items: center;
  width: 120px;
}
.custom-select {
  position: relative;
  width: 55px;
  cursor: pointer;
}
.selected {
    padding: 5px;
    background: #fff;
    display: flex;
    justify-content: left;
    align-items: left;
  }
  .selected img {
    width: 30px;
    height: 30px;
  }
  .options {
    display: none;
    position: absolute;
    width: 100%;
    background: #fff;
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 150px;
    overflow-y: auto;
  }
.options li {
    /* padding: 1px; */
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}
.options li img {
  width: 30px;
  height: 30px;
}
.options li:hover {
  background: #eee;
}






.table{
  background-color: rgba(210, 210, 210, 0.522);
  border-left: solid 8px #000000;
  border-right: solid 8px #000000;
  display: flex;
  justify-content: center;
  /* border:3px solid #000e7c ;
  background-color:rgb(192, 229, 248); */
  padding: 3px;
  margin-bottom: 20px;
}
.problems{
    margin: 0 25px;
}
.box{
  display: flex;
  align-items: center;
  width:auto;
  background-color: rgb(255, 255, 255);
  border:1px solid #000000 ;
  margin: 5px;
  padding: 0 2px;
  a{color: #000000;
  text-decoration: none;}
}
/* .box.active {
  background-color: #ffcc00;
  font-weight: bold;
  border: 2px solid #ff9900;
} */
.box.active {
  background-color: #373737;
  font-weight: bold;
  border: 2px solid #545454;
  a{color: #ffffff;}
}




.other_custom{display: flex;}






.brief{margin: 30pt;}
.brief_header{
    height: 28pt;
    padding-left: 18pt;
    cursor: pointer;
    border: 1px solid #ccc;
    background-color:rgba(185, 185, 185, 0.141);
    display: flex;
    align-items: center;
width: 180pt;
justify-content: space-between;
img{width: 20px;
padding-right: 10pt;}
}
.brief_contents{display: none;}
.brief_contents.show{display: block;
border: 1px solid #ccc;
padding-left: 40pt;
font-size: large;}
.brief_contents.show img{
width: 350px;
}
.answer{line-height: 2;}
.answer_img{
display: flex;
align-items: top;
}



.description img{
  width: 900px;
}

.ruidai{
  margin-left: 100px;
  width: 700px;
    img{
      border: solid 1px #000000;
    }
  
}
.ruidai_name{
  font-size: large;
  width: auto;
  align-items: center;
  img{
    border: solid 1px #000000; 
  }
}






/* .bbs{
    .bbs_header{display: flex;
    align-items: center;
    justify-content: space-between;}
    p{font-size: x-large;
    padding-left: 30pt;}
    a{color: black;
    font-size: x-large;
    padding-right: 40pt;}
    margin:30 ;
    border: 1px solid #ccc;
    background-color:rgba(255, 235, 205, 0.467);
} */

.inform{
  a{color: black;}
  padding-top: 30px;
  text-align: center;
}


footer{margin-top: 30px;
    padding: 1px;
    background-color: rgba(204, 204, 204, 0.175);
    a{color: black;}    
}