@charset "UTF-8";

html {
    font-size: 100%;
}
.box {
    border-width: thin;
    border-style: solid;

    display: inline-block;

    font-family: "Sawarabi Mincho", serif;
    font-weight: 400;
    font-style: normal;
    
    line-height: 2.5;
    margin: 5rem;
    padding: 2rem;

}
.align-left {
    text-align: left;
}
.align-right {
    text-align: right;
}
.align-center {
    text-align: center;
}
.big-font {
    font-size: 1.5rem;
    padding-top: 3rem;
    padding-bottom: 1rem;
}
.last-text {
    padding-bottom: 50px;
}
/*ボタンが押されたら出現させる*/
.dark-theme {
    background: #000;
    color: #ddd;
}

#btn {
    background: #0bd;
    padding: 1rem;
    margin-bottom: 2rem;
    font-size: 1rem;
    color: #fff;
    border-radius: 8px;
    border: 0;
    cursor: pointer;

}

@media(max-width: 768px) {
    html {
        font-size: 65%;
    }
}
@media(max-width: 480px) {
    html {
        font-size: 40%;
    }
}