#indexContentsContainer2 {
    display: flex;
    justify-content: center;
}
#indexContentsContainer2 > section {
    padding: 1px;
    margin: 15px auto;
}
#selfIntroductionContainer {
    background-color: #fffffa;
    border-color: #ffe100;
    border-style: solid;
    border-radius: 30px;
}
#selfIntroductionContainer > p {
    max-width: 600px;
    text-align: center;
    margin: 0 auto;
}
#qwertSNSAccounts {
    display: flex;
    max-width: 600px;
    justify-content: center;
    margin: 0 auto;
}
#qwertSNSAccounts > a {
    display: flex;
    width: 25px;
    height: 25px;
    padding: 1px;
    margin: 5px;
    border-color: #000000;
    border-style: solid;
    border-radius: 10px;
}