.content-block {
    margin-left: 2rem;
    font-size:1.25rem;
}
.content-block h2{
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: bold;
}
.content-block .explanation-content {
    margin-left: 1rem;
}
.content-block .explanation-content .content-inner-block {
    margin: 0.5rem;
}
.content-block .explanation-content .content-inner-block .comment {
    margin-top: 1rem;
    margin-bottom: 1rem;
    margin-left: 2rem;
}
.content-block .explanation-content .content-inner-block .comment ul {
    list-style: disc;
}

/* 編集画面 */
label {
    display: inline-block;
    width: 100px;
}
input {
    width: 100px;
}

/* 主語 */
span.sub {
    color: blue;
}

/* 動詞 */
span.verb {
    color: red;
}

/***** 問題集 *****/
.content-subject {
    display: flex;
    flex-wrap: wrap;
}
.content-subject h3 {
    font-weight: bold;
}
.content-block-1 {
    border: 2px solid #000000;
    margin-bottom: 1%;
    margin-left: 2%;
    padding-left: 2%;
}
.w-30 .content-block-1 {
    width: 30%;
}
.w-45 .content-block-1 {
    width: 45%;
}
.content-block-1 h4 {
    font-weight: bold;
    text-align: center;
}
.content-block-1 ul {
    list-style: circle;
}