html{width: 1530;}

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


.main_contents{
    border-right: solid 1px #00000034;
    width: 900;
    padding: 0px 20px;
}

.problems_header{
display: flex;
align-items: baseline;
width: 870px;
justify-content: space-between;
.year_name{a{text-decoration:none;}}
a{color: black;
}
h1 {bottom: -3px;
    width: 100%;
    border-bottom: solid 3px rgb(0, 0, 0);
    padding: 0 25px 0 15px;
    width: auto;
  }
}




.container {
    background-color: rgba(210, 210, 210, 0.522);
    border-left: solid 8px #000000;
    border-right: solid 8px #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    width: 88%;
    height: 40px;
    margin-top: 5px;
    margin-bottom: 30px;
    margin-left: 30px;
}
/* PDF */
.pdf{
margin: 0 10px 0 20px;
a{color: black;}
img{width: 20px;}
}
/* 大問1大問2... */
/* .table{
    display: flex;
    width: 550px;
}
.box{width:12%;} */

.table{display: flex;
    align-items: center;
  }
.box{
  display: flex;
  align-items: center; 
  width:auto;
  margin: 5px;
  padding: 0 2px;
  background-color: rgb(255, 255, 255);
  border:1px solid #000000 ;
  a{color: #000000;
  text-decoration: none;}
}
/* .box.active {
  background-color: #ffcc00;
  font-weight: bold;
  border: 2px solid #ff9900;
} */


.frame{
  margin: 50px 0;
  display: flex;
  align-items:top;
}

.problem img{
    padding-left: 40px;
    width: 800px;
}