.experimentsLetter{
    color: #5a7256;
    font-size: 50px;
    border-bottom: 5px solid #5a7256;
    margin: 100px 100px 0 100px;
}

.experimentsLetter1{
    color: #181a18;
    font-size: 25px;
    margin: 20px 100px 0 100px;
}

.experimentsLetter2{
    color: #277727;
    font-size: 25px;
    margin: 20px 100px 0 250px;
}

/* 折叠按键 */
.fold-bt {
    font-size: 22px;
    margin: 20px 100px 20px 200px;
}

.fold-content h1 {
    font-size: 35px;
    text-align: left;
}

.fold-content {
    font-size: 20px;
    text-align: justify;
    margin: 10px 100px 10px 200px;
}

.foldBoxes {
    margin-top: 50px;
}

.fold-bt span{
    font-weight: bolder;
    color: #1c4415;
}