body{
    width: 1000px;
    height: auto;
    padding: 5%;
    //background-image: url(/Users/user1/Desktop/sr/image/bg.jpg);
}

.main{
    flex-wrap:wrap;
    justify-content: center;
    padding: 5px;
}

.a{
    display:flex;
    justify-content: space-between;
    width: auto;
    height: auto;
    padding: 0.5em 1em;
    margin: 2em 0;
    color: #5d627b;
    background: white;
    border-top: solid 5px #5d627b;
    box-shadow: 0 3px 5px rgba(0, 0, 0, 0.22);
}

.a1{
    width: 50%;
    height: auto;
    padding: 2%;
    border:1px dotted #666;
    background-color:rgba(255,255,255,0.8);
}
.b1{
    width: 50%;
    height: auto;
    padding: 2%;
    border:1px dotted #666;
    background-color:rgba(255,255,255,0.8);
}

.c1{
    width: 50%;
    height: auto;
    padding: 2%;
    border:1px dotted #666;
    background-color:rgba(255,255,255,0.8);
}

.b{
    display:flex;
    justify-content: space-between;
    width: auto;
    height: auto;
    padding: 0.5em 1em;
    margin: 2em 0;
    color: #5d627b;
    background: white;
    border-top: solid 5px #5d627b;
    box-shadow: 0 3px 5px rgba(0, 0, 0, 0.22);
}

.c{
    display:flex;
    justify-content: space-between;
    width: auto;
    height: auto;
    padding: 0.5em 1em;
    margin: 2em 0;
    color: #5d627b;
    background: white;
    border-top: solid 5px #5d627b;
    box-shadow: 0 3px 5px rgba(0, 0, 0, 0.22);
}

h2 {
  position: relative;
  padding: 0.25em 1em;
  border-top: solid 2px black;
  border-bottom: solid 2px black;
}

h2:before, h2:after {
  content: '';
  position: absolute;
  top: -7px;
  width: 2px;
  height: -webkit-calc(100% + 14px);
  height: calc(100% + 14px);
  background-color: black;
}

h2:before {
  left: 7px;
}

h2:after {
  right: 7px;
}

h3{
    position:relative;
    padding: 0.5em 0.5em 0.5em 1.5em;
    line-height: 1.4;
    color: #ff6a6a;
    border-top: dotted 1px gray;
    border-bottom: dotted 1px gray;
    background: #fffff4;
}

h3:before{
    font-family: "Font Awesome 5 free";
    content: "\f138";
    font-weight: 900;
    position: absolute;
    font-size: 1em;
    left: 0.25em;
    top: 0.5em;
    color: #ff6a6a;
}

header{
    display:flex;
    flex-wrap:wrap;
    width: 90%;
}

footer{
    width: 900px;
    height: auto;
    padding-left: 6%;
    margin: 2%;
    border:3px solid #666;
    background-color:rgba(255,255,255,0.8);
}

.hidden_box {
    margin: 2em 0;/*前後の余白*/
    padding: 0;
}

/*ボタン装飾*/
.hidden_box label {
    display: inline-block;
  padding: 0.5em 1em;
  text-decoration: none;
  background: #f7f7f7;
  border-left: solid 6px #ff7c5c;/*左線*/
  color: #ff7c5c;/*文字色*/
  font-weight: bold;
  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.29);
}

/*ボタンホバー時*/
.hidden_box label:hover {
    background: #efefef;
    box-shadow: inset 0 0 2px rgba(128, 128, 128, 0.1);
  transform: translateY(2px);
}

/*チェックは見えなくする*/
.hidden_box input {
    display: none;
}

/*中身を非表示にしておく*/
.hidden_box .hidden_show {
    height: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    transition: 0.8s;
}

/*クリックで中身表示*/
.hidden_box input:checked ~ .hidden_show {
    padding: 10px 0;
    height: auto;
    opacity: 1;
}

blockquote {
    position: relative;
    padding: 10px 12px;
    box-sizing: border-box;
    font-style: italic;
    color: #464646;
    border-left: solid 40px #c4c4c4;
    background: #f3f3f3;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.19);
}

blockquote:before{
    display: inline-block;
    position: absolute;
    top: 50%;
    left: -48px;
    -ms-transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    content: "“";
    font-family: sans-serif;
    color: #FFF;
    font-size: 80px;
    line-height: 1;
}

blockquote p {
    position: relative;
    padding: 0;
    margin: 10px 0;
    z-index: 3;
    line-height: 1.7;
}

blockquote cite {
    display: block;
    text-align: right;
    color: #888888;
    font-size: 0.9em;
}