@font-face {
    font-family: "Frutiger";
    src: url("Frutiger.ttf") format("truetype")
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    width: 100%;
    left: 0%;
    background-color: white;
    color: black;
    font-size: 15px;
    font-family: "Frutiger";
}

.list {
    list-style: none;
    margin-left: -2%;
    margin-right: 3%;
    left: 0;
}

.header {
    background-color: white;
}

button{
    background-color: white;
    color: green;
}

a {
    color: #aa66ff; /*リンクの色*/
    font-size: 15px;
}

ol {
    line-height: 30px;
    padding-left: 50px;
}

.after {
    display: none;
}

.after+label {
    position: relative;
    left: 200px;
    width: auto;
    background: transparent; /*解答隠す->背景の色*/
    border-left-color: #aa66ff;
    border-left-width: 25px;
    border-left-style: solid;
    color: transparent; /*解答隠す->文字の色*/
    padding: 5px;
    margin: 5px;
    box-sizing: border-box;
    text-align: center;
    text-decoration: none;
    border-radius: 0px;
    cursor: pointer;
}

.after:checked+label {
    background-color: orange; /*解答表示->背景の色*/
    color: black; /*解答表示->文字の色*/
}