@import url('https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@700&family=Noto+Sans+JP:wght@300;500&family=DM+Serif+Text&display=swap');
body {
    background: #f3efea;
}
h1 {
    color: #B01335;
}
p {
    color: #1F4E5F;
}

.liner1 {
    background : linear-gradient(transparent 50%, #ffa64d 65%);
}

.btn--reset {
  color: #fff;
  background-color: #7c7c7c;
}
.btn--reset:hover {
  color: #fff;
  background: #a7a7a7;
}

.button-submit {
    font-size: 18px;
    display: inline-block;
    padding: 0.5em 1em 0.3em;
    position: relative;
    color: #990000;
    border: solid 2px #990000;
    border-radius: 5px;
    background-color: transparent;
    cursor: pointer;
}

.button-submit:before {
    background-color: #f1e2e2;
    border-radius: 5px;
    content: "";
    width: 100%;
    height: 100%;
    position: absolute;
    left: 5px;
    top: 5px;
    z-index: -1;
}

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

/*ボタン装飾*/
.hidden_box label {
    padding: 15px;
    font-weight: bold;
    border: solid 2px black;
    cursor :pointer;
}

/*ボタンホバー時*/
.hidden_box label:hover {
    background: #efefef;
}

/*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;
}

input[type=checkbox] {
    display: none;
}
.checkbox03 {
    box-sizing: border-box;
    cursor: pointer;
    display: inline-block;
    padding: 5px 30px;
    position: relative;
    width: auto;
}
.checkbox03::before {
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 3px;
    content: '';
    display: block;
    height: 16px;
    left: 5px;
    margin-top: -8px;
    position: absolute;
    top: 50%;
    width: 16px;
}
.checkbox03::after {
    border-right: 6px solid #8a280a;
    border-bottom: 3px solid #8a280a;
    content: '';
    display: block;
    height: 20px;
    left: 7px;
    margin-top: -16px;
    opacity: 0;
    position: absolute;
    top: 50%;
    transform: rotate(45deg) translate3d(0,2px,0) scale3d(.7,.7,1);
    transition: transform .2s ease-in-out, opacity .2s ease-in-out;
    width: 9px;
}
input[type=checkbox]:checked + .checkbox03::before {
    border-color: #666;
}
input[type=checkbox]:checked + .checkbox03::after {
    opacity: 1;
    transform: rotate(45deg) scale3d(1,1,1);
}