*{
    margin: 0;
    padding: 0;
}

.about{
    border-radius: 5%;
    width: 70%;
    margin: 5px auto;
    background-color: rgb(238, 232, 232);
    padding-bottom: 4px;
}
.aboutone{
    height: 80px;
    line-height: 80px;
    font-size: 40px;
    font-family: 楷体;
    text-align: center;
}
.border-bottom{
    border: 2px;
}
.abouttwo{
    margin: 20px auto;
    width: 82%;
    font-family: 宋体;
}
@media (max-width: 767.98px) {
    .about{
        border-radius: 0;
        width: 100%;
    }
}